I guess the best place to get a background you can see how I got started here:
My first rabbits
From the best I can tell the buck I have is a Californian and the doe is either a Satin or something similar. This leaves me with a litter that is mixed breed. The kits so far have either been black or californian in coloration ( nothing mixed). Being that I only have the two adults, I couldn't provide you with animals from different lines, but I could get you half way there.
In the current litter there are ten kits, so I could easily help you with either the buck or a few does. Since the does aren't going to breed until they are about 6 months old, you'll have a little time to find a good buck from another line if that is your aim.
I too will be adding some new blood to the mix this year. I really fell in love with raising rabbits so I'm going to take it more seriously this year by expanding the genetics.
Let me know if I can help at all.
I'm located near Belfast Maine.