Looks good but i would move the CHE over to one side or the other. GTPs tend to go to the highest perch available and with the CHE right smack in the middle of the highest perch, the snake cant really get cool.
And for the plants, what i have found works best for Pat is i will put the plants in front of the perches and not actually on the perches. That way the snake can still sit on the perches right next to the plants without plants actually covering them if that makes sense. Basically you are putting the plant between the perch and front of the cage. i do that with all 3 perches. Pat will sleep in the back left high perch behind a plant during the day and then at night, comes to the front high perch and sits in the middle of it.
And i would avoid misting the plants or the snake and if you have to, just mist the substrate. I mist my substrate about once a week. If you mist the plants and the oak dowels, they will mold. I found that out the hard way and a few people told me that too lol. And make sure the perches cant spin or move. GTPs dont like that.