From what I've been told and have seen most breeders will do the 2 years old and 1200+ grams before even thinking of putting that female in to breeding. It's quite dangerous when you over feed a young snake like that and then highly dangerous for that snake to be breeding at that age. It's known that young snakes like that do hold a high rick of becoming egg bound and or dieing. Why not just hold those girls back for another year or two? Why put their lives in danger? Just a bit to risky in my eyes.