With my usual disclaimer of "I'm no expert, I've had my first BP about a month" I will say this. If you like that particular snake so much, and are willing to put up with/pay for potential vet trips, and can live with the idea he may not make it, get him. You have no other snakes health to worry about, so to me if you're okay with all the accompanying (potential) complications, go for it. I feel it's about the individual pet, not just how you can get a decent snake for the same price elsewhere. If you'd come here looking for information on choosing your first snake and knew of how to get one from a breeder before you'd fallen in love with that little guy it would be different. But you didn't, and to me the things you've written make me believe it's THAT snake you want.
Again, not flying in the face of the wisdom presented here, because I fully believe that a snake from a reputable breeder is going to be better most of the time, but sometimes you can get a good pet from a store. I got my Professor Snape from a sale at a local pet store, and so far he's been determined to disprove everything I've heard about them being picky eaters. I've kept him on small live adult mice, and he's refused nothing, and had no regurgitations. I fed him 3 days after getting him home, and last night DURING his shed.
Sometimes with pets you have to go with your heart. Of course I once bought a bird from a show with no upper beak, and that didn't turn out as well as Snape has, so I could be perceived as a bit of a sucker on the subject :-)