Bob Clark is definitely in OKC and was pretty nice when I started this addiction a couple of years ago...he sold me my first one ever, a normal male, and even came in and opened up the place on a Sunday morning and let me hold an albino when we drove to OKC to get the boy.
Also, Casey Tevebaugh with Empire Reptiles seems nice, although I've never had a transaction with him.
Don Meekers is in Oklahoma too...has very minimal web presence but the people I know who know him swear by him. He has some high-end balls but I dunno what he's got available.
And of course, ask me this time next year and I may have some good news too. ;-)