Hi
He's adorable, but a couple suggestions?
You have a really deep tank there, you could easily give the lizard a lot of room to dig tunnels. You just need to raise the level of the substrate to at least six inches. This will help the lizard twofold. He will be able to dig burrows, and it will raise the temp of the basking spot. At 105 degrees, its too low. The simplest way to make it hotter, is allow the lizard to get closer to it. You can angle a branch or piece of cork to the light. Then Moko can move closer or further away, depending on what amount of heat he wants.
Beware of your screen lid. Heat and humidity escapes through it. Tape it up and re-measure.
Good luck with him. D.