the problem with some people is that they don't read what you post and then just give advice without thinking things through...
personaly, that fish tank will do you and your chameleon well as long as you follow a bit of advice that you seem to already be doing.
what some people don't realise is that wire cages DON'T HOLD HEAT and HUMIDITY WELL in your winter months. heck, fall and spring too. I'm not too sure what your outside humidity is like in the summer, but if it's not 40% or better, then I would stick with the fish tank.
be well aware that a wire cage will require you to buy a cool mist humidifier to be used at least 6 months out of the year, and off and on for the rest of the months. they run dry fast. you'll have to refill them at least twice a day, and require alot of cleaning to prevent bacterea growth.
even with lots of large plants and towels covering the sides of a wire cage you will still need to run a humidifier...and what's the point of covering the back and sides of a wire cage with towels, then you can't see your chameleon, when glass will work just fine.
your chameleon is in a shop/work place, and I just don't see you going back to work late at night to add water to the humidifier you'll need.
just remove the substrate, get rid of the infra red lights you are using...no need. use a single, standard 25w or 40w bulb for basking. add a few live plants...if too short like a pothos, then buy a spare flower pot and turn it upside down in the tank and place the planted pothos ontop of it.
you can buy a large ficus at LLLreptile.com for cheap and they ship great...just repot it in a better pot and trim it a bit and place in the tank.
when misting, only do it for a minite or two as you don't want the tank to get too wet. mist only twice per day at the most.
if you would like to use a dripper once in a while make sure it doesn't last too long (2 hours max) and you have a catch bucket for all the water that will drip off the real or fake leaves.
start with this advice and then keep asking more questions...you are on the right path.
Harry