Maggie, I'm glad you specified "nice". My friend had the BO roo from my order (that was supposed to be a pullet). That roo was so brutal to the hens that all 18 hens had no feathers on their backs and one Ancona had a severely torn comb. My friend finally just dropped him off in the woods somewhere to go and find something else to traumatize!
Lurky, I sort of agree with you. If I were in the same situation, I don't know what I'd do - I don't know if I could chop his head off and stew him... Nasty roosters are a no-win situation. But the good part is that 18 pullets can now have a quality life.
(Maybe he's just nasty enough to terrorize the coyotes who will be stalking him.)
Try Jody (Hinkjc). I think you could buy chicks from her. I know you probably want a big boy but she has STUNNING Buff Orpingtons so I think it would be a good idea, and hey you might get a few more girls and sell of the ones you do not want.