Opal and Forrest need to be adopted together. They're a bonded pair. When they form deep attachments, it can cause all sorts of stress if they're separated.
A female rabbit can get pregnant again within hours of giving birth. So it's important to get them spayed or neutered. Male rabbits tend to be a little calmer when they're neutered -- they don't spray, that sort of thing. All the animals adopted from us are already spayed or neutered.