I would think that gaining 1000 grams in 9-10 months might be a bit of a stretch. But, you never know. Just see how she is in November, and if she's not ready, give her another year to mature.
Do you have to give males cycle time if say you are breeding him to two or three females that are breeding at different times in the year?
Is it generally good practice to get all snakes in a collection on the same cycle as I've heard they can sense when a female nearby is ovulating and this causes some snakes to fast for a while?