I would drop the hot side down to around 90F and cool side down to around 78-80F. Humidity, I would do between 60-70. I try and keep all my gals and guy except my carpet and dumerils at around 65% humidity. I keep the dumerils and carpet at around 60%.

As for hides, I would put 2 in there. One on the cool side and one on the hot side so the snake can make a choice without sacrificing security. Try and use the same hides for both sides as sometimes snakes like a certain hide and will sacrifice cooling/warming in favor of that hide.

Usually BPs don't move much during the day unless they are uncomfortable. My gal never comes out during the day unless she is going from one hide to another. At night though, she is all over but come morning, she goes back into one hide or another.

Honestly if you are looking to upgrade caging, my advice is buy a PVC cage instead of another tank. Much better and more secure for your snake. There are tons out there. Animal Plastics is my vote. Best bang for the buck and they offer so many customizations like shelves, LED lights, locks, swing or sliding glass or acrylic doors etc.