As long as it's at least 55% humidity during the day, you're good! Adding a stand under his cage will allow you to put a drainage system underneath (the cage) to collect pooling water away from inside the cage!
So unless you have a Solarmeter to measure UV levels, you'll want the distance from branch to bulb be between 8-9"
As long as he can't see his reflection, all good then!
A smooth tubing would be best as some contaminants aren't always visible. Also, if you haven't looked into this yet, Star San is what a lot of people on here use to clean their fogger and lines. It might be easier for you!
Also, you have one beautiful cham!!!



If you wouldn't mind spamming us with more pics of him and his brother, it'd be greatly appreciated!