Good looking enclosure. I'm about to be building one for my cham and definetly am seeing some things I like. I hadn't thought about the plexi bottom like that, but might have to steal that idea.
I took my daughters Winnie the Pooh humidifier for my reptile room :) Works like a champ, my Tokay and new Senegal love it, but I do still mist by hand until I get a misting system. I do have a drip line set up into the cham's cage to provide a constant source of water for the little guy/girl