i agree with picking up or making a dripper, its really good as it allows lots of opportunities to drink

just make sure you have some sort of drainage figured out that way puddles dont develop in the cage, what kind of cage is he in?
if there are lots of foliage and pathways for him to get around on, as well as a good temp variance throughout the cage as you described, you dont necessarily have to move the light up. it sounds like you have a good temp variance so as long as he can move around to those different areas then he can adjust his body temp
we cant help being paranoid, these guys are definitely more fragile then other reptiles! but i think you are doing well so far so try not to stress

any questions you have we are here to help!