I have been telling yo upeople for FIVE years - get deremensis... but nobody listens. They are not easy to breed, but they are about the hardiest montane species you will find. I find them much easier to acclimate, and keep, than even jacksonii. They are much less sensative to vitamins than other montanes (I raised a small CB with esentially the same vitamin/mineral regiment as my calyptratus babies), and they don't really require a heat lamp. I have only seen (and heard of) gravid females basking.
They are VERY mellow,and friendly chameleons - the only time I had one show any aggression to me was when I interrupted a territorial dispute, and my male (in full breeding "mode") stabbed me with his horn. EVERY deremensis I've owned has eaten from my hands within minutes of arrival. In fact, I pulled out a male I got just a couple weeks ago. I held him in one hand, checking his feet and bruises from shipping, he was not happy. Still, after messing with him for a few minutes, he ate a cricket from my hand, while he perched in my other hand. they are just too relaxed...
And they are long lived animals. There are some males (on a farm) in Tanzania that are over 9 years old.