That Burm wont get stressed in a T8 bro IMO.. I see a lot of talk about stressing snakes and the only time ive found really stressed snakes are when they come from bad breeders, pet stores, Reptile mills or if you dont know what your doing and toss them in a fish tank ect...
Of course Balls are prone to be nervous snakes period.. Probably because they are subject to harm easily in the wild. Burms (my Fav), Tics and larger breed Boa's seem to take things in stride more in my experience. Ive never owned Tics but had a Red Tail Boa as a teen and 2 Burms so far. Both my burms went with the flow, always explored and never acted like Nervous Nelly's. They are both still alive, 20 & 24 yrs old. Your gonna have some fun with this guy.
What I do is use my large 5qt water bowl in the middle of one side of my bottom T12 for my young snake with a hide against the Hot Side wall and the cool Hide just on the other side of the 5qt water bowl. That makes the snake have a smaller safer spot (1/2 enclosure). At night she comes out and lays across the empty side of the enclosure and crawls up the PVC pipes. So you can always do that instead of a divider.
Your getting a Burm from a reputable breeder I wouldn't worry about him being a stressed snake with the nice setup you have and a few days to settle in.
Here is a pic of the 1/2 side I use in my AP. The left side is just empty and she is happy to lay out over there at night.. Not stressed at all.
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