would not use it for the collared. Save it for your frogs!
Use paper towel or newspaper for now. Your better off!
Glad Tobia got his big boy tank ! I know you may not want to hear this
becuase it looks really cool but the big grapvine or branch,
I think I would also give that to the frogs, and give Tobia a nice rock to bask on, and put his basking light right on top of the screen over the rock.
The big tree limb goes right to the top and it seems you cant put the basking light on top screen, because he can get burned I guess.
Also you will free up alot of jumping space for him without the tree. They prefer rocks ! I sometimes have a small piece of drift wood as a ramp or whatever but the main funiture is Rock!
Now are you sad that we have all re-done your nice new home ?
I sure hope not, just suggestions, 
The bigger tank is the main thing, he will enjoy that. Hows his foot?
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Eve