Breeding for two snakes doesn't seem worth it. I'd try and convert yours to f/t.

But if you decide to go through with breeding check out this thread for some inspiration on how to house them, etc.

http://ball-pythons.net/forums/showthread.php?t=80003

I have mine in my garage also but it is insulated and partly heated--only gets as cold as 50 degrees. They do fine in there with lots of nesting material.