What was the plastic wrap for before you put in the egg crate and weed guard? Protect the glass?
I have a tank that I want to make into an open top paludarium/riparium. I have no idea how to build a waterfall, but I was thinking of using expanding foam to hold together some driftwood/cork bark. I am a little apprehensive about putting expanding foam right on the glass.
LED's are really great. They're my lighting of choice.
Maybe since you already know a lot about keeping humid set ups, you might find it easy. All that equipment is too troublesome.