It looks great, Gen! Seriously. I'd also echo Paul's concern with escape-proofing the enclosure, though. As he said, bolts and wingnuts are one pretty easy way to go about it. Another is to make holes with a soldering iron or drill and use bungee cords to secure it. Another way you can do it without needing to make more holes is to buy clamps in the hardware section and use them around the edges.

I think you'll be really happy with your new enclosure. You may have to do a bit of tweaking to keep your temps and humidity in range, but it shouldn't require nearly as much as an aquarium, and now you can use that aquarium for either something aquatic or something that doesn't require as much monitoring.