Placing a semi-feral cat into new home. Need input!

I'd like to get some input about a potential adoption that is in the works. Our rescue has a cat, Annie, who is borderline semi-feral. She doesn't want to come within 2-3 feet of a human and can't be touched except for on rare occasions when you catch her at the right time. It's not often, just maybe once ever other month. She didn't have contact with humans the first few months of her life so she has a very deep set fear.
We've posted her on the internet for adoption although getting her adopted is a long shot. But a few days ago we actually got an email from a girl who is interested in adopting her as a companion for her current cat. That's really great news but I am a bit worried. Annie currently lives with seven other cats and has for over two years. There are only two humans in her foster home and she has a lot of space where she doesn't have to be with the people. The potential adoptive home has three pre-teen kids and three adults and only one other cat. Since she prefers to hang out with other cats and are only comfortable among them I'm a bit worried that there is only one other cat in the home and a lot of humans to get used to. She's mainly going to be cared for by one of the adults and will have safe space in the bedroom but it's still a big change for her.
Ideally I would like to see her going to a sanctuary and live with many other cats but finding a sanctuary spot for a cat is extremely difficult. Making her a barn cat is not an option since she has lived inside since she was a kitten. Because of that I'm leaning towards approving the adoption as long as everything checks out. I'd just like to get some input from others that have experience with semi-feral cats on whether or not this would be a good choice for a cat like Annie.

Thanks for all the great input! My worries were mostly that there is only one cat in the home which wouldn't leave Annie with much company that she's comfortable with. But I hadn't thought much about the kids being a potential problem. They only live there 50% of the time and according to the adopter they are respectful of the cats but of course the number of them and them bringing a bunch of friends over can be a problem. I want Annie to live in a home where she will be relaxed and comfortable and not have to be cooped up in a room terrified.
I still haven't ruled it out though. The adopter is coming to visit Annie this weekend and I'll pay a visit to her home too so we'll see if it will be a situation that may work. Opportunities to place a semi-feral cat in a good, indoor home doesn't come across often. I'm not going to send her somewhere just to get her adopted if it's not the right place for her. But I really hope that it is.

The girl came to visit us today to see Annie. It actually worked out worse than I expected but the girl is still interested. I invited her into the cat room where Annie was and before we even got there she must have heard a strange voice and went to hide behind a chair. I pulled the chair out a bit so she could see Annie and poor Annie got so freaked out that she darted past us and ran out of the room. She was probably heading to the bedroom but I had put the dogs in there and closed the door so she ended up sitting in the stairs looking terrified. Poor thing.

I am going to try the placement even though it's not ideal. It's going to be very tough for her but any movement of her would be tough no matter where she's going. A sanctuary with many other cats and minimal human interaction would be best but those are extremely hard to come by. Annie needs a permanent home and people willing to adopt a semi-feral cat don't come around very often. This girl is okay with the possibility that Annie will never interact with her. She just wants a buddy for her cat and that's something she can do.
She will be staying in the one bedroom with the other cat for the first few weeks and I think that with a good plan she will be okay after a few days. I have to say that I am worried for her sake though. She is so scared, poor baby.

I forgot to recommend a feliway diffuser to the adopter but I'll send her an email about it. I've actually never used it myself. Does it really work? I've heard from some people who swear on it while others don't think it does anything. In Annie's case it definitely couldn't hurt. Maybe I should put one in my cat room to see if it helps my other two scaredy cats.

I think it's pretty amazing that this girl is willing to take a cat as antisocial as Annie. Very few people would be willing to do that. She mainly wants a friend for her cat and not really another pet for herself and that's something Annie can provide. She was also looking for a hard to place cat. I wish more people were like that.
I have explained to her at length what Annie is like and the challenges she has. I want to make sure that she truly understands that this is not the run-of-the-mill shy cat. It's quite likely that she will never want to interact with humans. She is much better now then she was when she came though so I know she is capable of making progress.

I just feel a bit bad for Annie because I know she will have a very, very hard time when she moves. She's going to be completely fear stricken at first, maybe for weeks. I'm going to recommend that the adopter spends as little time as possible in the room with her at first so that she can relax some and get to know the new environment and the new cat before scary humans come into the picture. She's still probably going to literally fear for her life though and it pains me to know that. Unfortunately it's something she has to go through to get a permanent home. I just wish that it wasn't.

Bad news. The adopter backed out. She said that she didn't feel that her home was right for Annie. She's probably right. Although Annie could have lived okay in the one room it's far from an ideal situation and I can understand why someone is reluctant to adopt a cat with these types of problems.
I'm a bit bummed about it but at the same time it was probably for the better for Annie. She really does need a sanctuary or a multicat home where she can be part of a cat family.

You're all right. It probably saved Annie from a lot of trauma. I do think this was for the better but I also know that the chance that someone else is going to want to adopt Annie is not very high. I have been advertising her as a companion cat and she would be good as that. But it still takes a very special person to be willing to take on the challenge.
Unfortunately I don't think I can claim that she is a recent rescue. Her spay and blood test records are from 2009 and those have to be turned over to the adopter.

I have an idea that I've been entertaining about getting a permanent home for her and my other two semi-ferals that have to be placed together (they are brothers and very close). There are several really good cat shelters in the Chicago area that are set up to keep their cats forever if they don't get adopted. They are cageless and have very nice set ups for the cats. I was considering approaching these shelters to see if they would consider switching three of their adoptable cats for our three unadoptable cats. That way their cats would get out of the shelter and into foster homes and eventually adopted into good, well screened homes while our cats would get permanent homes in an environment that is right for them. What do you guys think of that idea?

I'm not quite sure I understand what you mean about the FIV cats.