I currently have a group of 4 mice in a Freddy 2 and have found the 2 other mice I would like to add to my group. One is a 6-8 month female, who is much bigger than the others I have. She was bred to show standard and she was going to be bred from until the breeder decided she didn't fit the lines he wanted or something. So she is now in a pet shop. She is absolutely beautiful and very very friendly. She has already been bonded with an 8 month old show standard mouse, however when I held her, she bit me twice. I don't want to separate them but I don't want the younger one attacking my other mice.
Also, I have reserved a 6-8week old white mouse, from the same breeder as my other mice, who is very very friendly.
So....do I
A) Get the white 8 week old mouse and introduce her to the older 8 month old mouse and then introduce them all to the other 4?
B) Just get the 8 month old and the one she is already bonded with who bit me?
C) Get the 8 month old and the 8 week old I have reserved and just introduce them and my 4 all at the same time???
Any help would be appreciated!!

(sorry for the mammoth post)