Congrats and I don't think you will be disappointed in the way he turns out. I have gotten two chams from them and they are both very beautiful. Liddy, Ed, and Brianna are a great bunch of people to work with. be sure and post pics when your little one gets settled in.
Looks like he will have nice foliage and vines.
I have often used an upside down bucket or other sturdy plastic item to raise the plant high enough for the cham to bask and have a little privacy while basking.
Your cham should be able to get within 12" of the UVB bulb in order to absorb enough UVB from it.
I'm sure you'll be a great chamkeeper, since you've been researching and setting things up first.
As stated, make sure that the basking site has foliage for him to feel comfortable. The dirt in the plant should be covered. I use 2-3 inch decorative rock that can be found at craft stores. I would def make a site or 2 closer to the UVB. Other than that it looks good.