I have mine in a 4'x20"x26" wooden enclosure and thats what im keepin her in for her life time. I think the tank is just about the right size. Sorry i dont have any real good pictures of her tank.
I have 2 hides one on each side water bowl on cool side and climbing branch in the middle and she seems to like it.
Happy herping,
-Reptilez
P.S. I kept my ball in a 20g untill it was about 2 feet long or so