For me I would say 2-3 years.
Some people may disagree with me but thats just my personal preference.
Females 11+ feet. Good health, weight ect.
I am going to be breeding my coastals and my male tic and am going to wait a few years.
No sense in pushing an animal into breeding that is not ready to.
I would rather wait another year than have a bad breeding season because I couldn't wait.
Mike