Definately getting there! Do you need the large Temp and Humidity gauge? If so, I would place it up against the back facing out the side, with a large piece of wood or plants in front to hide it (i.e. its only visible from the side). It kind of takes away from the experience. Or get individual mini meters which will fit in an upper corner.
The vines are really nice looking, will they branch out more? It would be cool if they covered like 60% of that wall.
Also, some nice twisted wood pieces leaning up against the back would look really nice.
Those are my suggestions, with an unlimited budget. I think it's looking really really nice though.