Cindy, No 2 years old isn't old at all. Paizly still has a lot of kitten in her. My Pearl is 5 and Ziggy will soon be 4 and they still love to play like kittens. Even Sky who is now 8 will also join in on the fun and my RB Sunny was an eternal kitten who always enjoyed a good play session. Now Storm is lucky that he can just relax and sleep in another room while all of this rough housing is going on but sometimes even he'll join in on the fun.

If Paizly was over 10 years old and has been an only cat for many years then I'd be more concerned that things might not work out but I don't see you having any problems. Every time I adopted a kitten, I didn't even separate any one because at the time I had a roommate so I didn't have a spare bedroom. Yes, there was some hissing and growling but in about 2-3 days everyone calmed down and they all got along. Good luck.