I know how you feel. After Tigris passed we wanted to leave Filou alone as he was seriously ill and we did not want to put him under more stress. But after Filou passed we only waited for a week... It was just too sad in the house. So I would recommed another boy kitty. I feel the ladies are the bossier ones and a young boy might be a better fit for CJ... However I wish you good luck and it is totally right to ask all theae questions. You may want to fond as much as you can about those babies.