G.F.
I highly recommend getting the book Before You Get Your Puppy by Ian Dunbar, so you know what to expect with a puppy. I don't have sources of breeders for you, but look on the Humane Society of the United States web site and do a search for tips in finding a good breeder and picking a puppy. They have great advice there.
If you are at all nervous about introducing puppy and a rabbit, hire a professional trainer to help you with the introduction. As a dog professional I have seen many things go wrong when introducing new animals to each other. Most of the time the signals are not obvious at first, but over time, one or both animals are completely stressed out by each other. Once that happens it is much harder to repair the relationship. Check out the site for the Association of Pet Dog Trainers for a dog trainer to help you out. When interviewing folks try to find someone who works with multi-species.
Good luck with your new family member!
G., CTC, CPDT, CAP2