You have all of the right information and as others have said, a kitten is much less threatening so I hope that you won't run into any problems. With Starr, Pearl, and now baby Ziggy Stardust, I just let them roam around and I never had to confine them. I've had Ziggy here since Sat. afternoon and as of this evening, all of my cats have now accepted her but they're also used to living with other cats. Good luck and please keep us updated. Pictures would be nice too.