I'd ditch the old school thermometers and hygrometers for a nice digital one. Can get them at any local Petsmart or PetCo for like $10.00.

I would also find a couple hides that aren't so open at the front. Remember ball pythons like to feel snug and secure and those hides will leave a good portion of body exposed.
I recommend http://www.reptilebasics.com/

Just personal opinion though. Hope it is of some use.