Looks like you are taking a lot of time to think this over. Good for you! I don't know that you need to change anything, but:
The only things I would mention, and really, you may not need to change anything, but something to think about:
Geckos love to climb and are known as escape artists. Make sure your plants or wood isn't high enough to offer an "out". Also, we made the mistake of putting in a tall plant and the gecko went straight up it... and then couldn't get down. (we were watching and rescued her, don't worry.) Just don't make anything too high they will jump and no one wants to get hurt.
Also, I was advised long ago that some leos really prefer hides with two doors. I've seen some geckos perfectly fine with one "door" hole cut in their hide, but if you notice the little guy avoiding a hide, keep in mind trying to cut a hole opposite to see if that helps.
Don't forget about cleaning, everything in there should be sanitized at least every 6 months, keep that in mind if you are gluing or planting real plants. And I'm guessing it is at least a 10 gal size?
Good luck! I'm sure s/he will love it!
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0.1 Albino Leo Gecko
0.1 Crested Gecko
1.0 Dear Boyfriend
Departed: Harvey and Spock