I have a 50% Jampea 50% mainland, it will be interesting to see how big she gets. She is already getting big, over five pounds now, still about a year old. I'm guessing she will get 12-14 feet and probably at least 70 pounds. She is very sweet, never was defensive at all, but almost got me from a wild feeding response when I opened up her tub one time! I feed her well now, she never really flies out like she used to when she was younger. I'm attached to this snake more than all my others.