Everything looks pretty good. Ball pythons are pretty clumsy, so all those things for your BP to climb on may be counterproductive as he will be falling down all the time and possibly injuring himself. I would bring their height down a bit.
It seems like humidity is going to be difficult with an open top. You might think of covering the top to keep some humidity in, but if you're somewhere like Florida it may be good to go as is.
Temps can vary a couple of degrees no problem. 80-84 cool side and 88-low 90's hot side is the generally accepted range of temps. Well known breeders such as the Barkers let temps go to high 70's at night, but you can't go wrong keeping them at 80ish.
Do you have any thermostats on there??
JonV