Can I make a polite plea that you reconsider breeding? You seem very level headed and are obviously doing your research, and have made sure you have homes lined up, which is great - I wish more breeders would do those things.
I was just thinking that if you didn't breed, you could recommend that the homes that you have lined up for the babies instead visit a rescue and adopt a pair of bunnies from there. That way, if the 8 homes you have lined up all adopted a pair of rabbits, 16 bunnies would find nice new homes, which makes space in those rescues for 16 more bunnies in need. If you breed 8 new babies that is adding to the numbers overall. As I think someone mentioned further up the page, there are around 65,000 rabbits in rescue in the UK alone, who are crying out for homes to go to. As a fosterer for a rabbit rescue, I only wish I knew 8 families who wanted to take in some of our rescue rabbits