In your original post you stated you were leaning toward a panther. Why not get a smaller species such as the carpet chameleon, F. lateralis. I've got a pair in two 18"x18"x24" Exo-Terra planted bio setups. They sit side by side on the third shelf from the floor at 45" on a shelving unit that...
Just remember your water source must be above the pump unless unit is attached to a pressurized system. I hung mine with wire under the shelf that holds my water container.
Just wanted to advise you. In the Cage Info section above you listed the plant as a Ficus benjamina.
However, the plant in the video and picture is a Schefflera. Both are good plants for chameleons.
If you'll buy spikes and your looking for great pricing, with free shipping, I doubt if you'll find anyone cheaper then JaDa Bait (www.jadabait.biz). Only $14.50/1000, less in larger quantities.
LLL is running a Cyber Monday sale on the 24x24x48 screen cages @ $69.99 each and the Mist King ulitimate misting system @ $179.99 each until 3:30 pm pacific time. You can cut up your card after you buy the Mist King system.
Contact Josh at Josh's Frogs. He's in Michigan and can ship overnight or it would be two days to Iowa UPS ground. He's also one of this sites sponsors.