I am on this board because of my daughter. She loves snakes, geckos, and other reptiles. We recently caved and allowed her to get her first reptilian pet. A Ball Python she named Ozzy. She's in love.

Seemed like a pretty good deal because he "came with all his stuff" for total of $200. We studied up and made sure we knew what he needed and how to take care of him.
HOWEVER... he did NOT "come with all his stuff", or at least not good stuff. The temp and humidity is practically uncontrollable and we have to check it constantly. Thank God she's off of school. I have no idea how this snake has lived. So... we are re-vamping poor Ozzy's tank, heating system... you name it.

He's a little over 1yr old, eats live small adult mice. He is close to 2ft in length I'd say.

HERE IS THE PLAN: Please tell me WHERE I am wrong or what could be better.

Exo-Terra 24x18x12 tank (will partially cover the top to help with humidity and temp control, currently planning on using foil)
UTH - will cover 1/3 of bottom of tank (on the outside) has temp control system, will be placed on ceramic tile on top of her dresser or desk.
CHE - with thermostat to help regulate ambient temp depending on how the UTH system does
Ambient Temp: 80-85
Coldest on the cold side not to reach below 75, range 78-80
Hottest on the hot side not to reach over 96, range 88-92
Humidity range 50-60%, 70-80% during shedding

Larger pool because his is freakin tiny. 8in at it's longest point. Also to be put on top of (at least partially) UTH to help with our humidity problem. Plan on seeing if his small one will fit on the opposite side.
Moisture box with some moss.
Also plan on trying to add some moss elsewhere in his tank depending on how our humidity problem continues.
His original hide
Cyprus Mulch
Green mat of some sort at the bottom. Can't recall what that's called.
I'm adding a branch because... fun.

What else? Is Ozzy good?

Also... what's the best way to acclimate him to his new 'home'? He currently eats like a champ and doesn't seem to have any issues. My daughter takes him out about every other day.

Thank you!