I got this guy about a year and a half ago, he just molted for the first time in my care about 2 months ago... he is a Long term captive T. I dont know how long they take to grow, but I'd say pretty fast...minus the ultimate molt... I waited a while. It all depends on how you feed them too. If you feed them all the time they will grow quicker, but I would say mine was on a strict diet... eating about 8-10 crickets every two weeks... and a mouse every once in a while, only 2 to be exact.
A blondi was my first T about 4 years ago or so, and I've owned 3 of them, and an T. Apopthisis. I like them. to me its like everybody having a rose hair... you just have to have one to say you have one.