Right off you have a problem, because it is not a safe situation to keep both a declawed cat with a non-declawed cat. Most will tell you that should never be done. I am not a proponent of declawing, and this is one of the reasons why. A cat that is declawed can never go out, nor can it join a household with clawed cats, or visa versa. It is very limiting, besides being extraordinarily painful.
If there is absolutely no way around this, I would not suggest declawing your cat. They sell these things (I forget what they are called -- others here can tell you) that you can put over the cat's claws to at least even up the playing field a little. Don't take this problem lightly. If one cat has claws and the other doesn't, since cats use their claws as defense, it's like putting two fighters together and tying one's hands behind his or her back and telling them to go at it. It's a very dangerous situation for the declawed cat. So this matter has to be dealt with. Perhaps others here have had more experience that I in mixing claws with non-claws.
Who is sleeping where does not matter. What matters is the ability to keep the cats apart when necessary until you are sure they get along. Are the children old enough and responsible enough to keep one of the cats in their room if necessary for a while? To begin to get the used to each other, the new cat should be put in one bedroom and kept there a day or two while the resident cat has run of the rest of the house. They will get used to each others scent that way. After that you can begin to let them meet, always supervised, until such time that you know they can coexist together. If they fight, it usually can be accomplsihed, it just takes patience and time. I think even here in the iste there is a sticky thread about introducing cats.
Their ages could come into play also, but their personalities would be more the factor, I think.
The important thing would be to keep them apart and keep the control over how they interact, when, etc. I personally have not had too much experience in this, but it is a common problem, and I know many others will join in to share their expeiences and knowledge too.
The experiences I have had were ones where I had to keep the cats separated regardless of the inconveniece it cost. That is something you will need to make sure you can do, unless you are very lucky an the cats get along right away.
How long do you have to move in?