Just a note after reading through quickly,
ATBS can get up to 7 ft, although rarely, and have a pretty good bite. I have a female ATB that was around 6 1/2 ft.
I've been bitten by ATBs, GTPs, BPs, Carpet Pythons, Candoia, and a couple others... none are that bad. Almost all just leave small puncture wounds, unless you smell like food and they pull or if you pull away while still being bit. If I had to say, GTPs have bigger teeth and would probably hurt more. To tell you the truth I'm most wary of being bit by my big Sonoran Desert (Bci) female (4ft) or my yearling Bornean Short-tailed Python (2 ft) simply because of how hard they hit prey items... haha
All can be handled though if picked up correctly and held without constricting them - so they think your arms are branches. Whenever mine are curled up in balls I just grab the whole body quickly and let them unravel in my hand... no issues ever. It's really only difficult when they're awake and alert.