Hi! I agree with Sassy, the male needs to be seperated, hopefully the females will get along so you won't have to have 3 cages of single chins.
Also, and this isn't written in stone, I don't think 2 females and one male will ever live all together...there's always exceptions of course, but that seems to be the way it usually goes. And I don't know how chinnie experianced you are, but that could be alot of babies, seperate cages, timing and possibly vet bills. I personally would suggest getting another male and having 2 same sex pairs.
Jade's site has a really good introduction section with her first hand experiance, I'll find the link for you.