Well i can tell you one thing, your ambient temps are probably going to be a little low. Now are the temps during the day this low? Cuz if they are you might run into problems...I'm not saying you are FOR SURE but I have heard temps that low can cause issues. I live in a cold climate as well, during the day and at night, and I have my snakes in a room with a little space heater. It managaes to keep ambient temps at 75+. I think low 70's are something you should shoot for just to be safe. I actually have a video posted on youtube of my snakes and my setup check it out for a reference!
YouTube - Ball Pythons and Care Information