Start with one or both?

I will be slowly introducing my new 8 month old to the other 2 cats that I have. Would be it wiser to start the intro with just one of the residential cats or both with my kitten?
I dont want to overwhelm any of my babies...easy and gentle....I will be standing by with my husband and both of us will have a towel to use to seperate them if they get alittle aggitated with each other...any help or suggestions are greatly appreciated.
Thanks!!

I would recommend the links on the site for cat introductions. I assume your other cats are older. As you say, I would definitely take it slow, initially keeping them separate, gradually introducing them to each others smells, then letting them sniff under doors, etc. before any introductions...all the info should be on some links. It seems, if you are doing the procedures correctly and slowly you could probably do them at the same time as they will get used to the smells. Do take it slow though and really watch, some cats adapt quicker than others but you should definitely follow recommended steps.