Your female is 1,350 grams. She could probably breed, and everything would probably be OK, but she's likely to give you a smallish clutch would be my guess. I have a female about the same size here, and plan to keep conditioning her until the cooling of Autumn, when she should be well over 1,500 grams. That seems to be the trigger point for most of the breeders.
Ball pythons come from places pretty close to the equator. I'd imagine _some_ will breed just about any month of the year - if you put them together and they lock, you're on your way - if not, have you lost anything?
If you breed your normal gal to your 100% het male, then yeah - you'll get 50% possible hets. Good luck trying to sort 'em out! (Best way is to wait a few years, and put 'em with a piebald!)
My $.02 - and you probably deserve change.
~Bruce