I have a snake from RC reptiles,

Hes my only, a pastel male and i defintally got what i wanted (love his pattern, good color too). Totally smooth transaction, no problems, the snake was 100% healthy and is doing great. Id definitally Recomend Ron.

Just for another option for you, Check out:
http://crestedgecko.com/ball_python_available.htm

He has a great price on pairs, Ive talked to Garrick a few times, before i got my Pastel, he ended up selling out before i was ready to pull the trigger, but amazing customer service and quick responses, Just fauna him, all good things said.

Anyway, its much more economical then anything else really, and probably invoids inbreeding to a extent when you cross back because you dont really need to. Maybe im nieve and not used to the snake breeding scene but i would be worried to keep breeding related hets, maybe i read your post wrong.

Anyway, good luck with your project.