Thanks for the kudos! If you do a google search for "DIY Plywood Aquarium" you'll come up with a myriad of plans. The most widely used plans are at
http://www.garf.org/howtodoinformation.htm#AquariumConstruction, but my plans are pretty loosely based on that. I made a drawing and the design evolved from there. (I started off with 4x2x2, then 5.5'x2'x2', then I started looking at glass, and realized it would cost me a similar amount to make a 3' tall tank, so I did... etc.)
I don't know what I want to keep yet. I love pleco's and I love Oscars... I just wish Oscars weren't so agressive. I've had them before with some success, but I would like to keep some pretty colors in this tank, and obviously Oscars aren't really easy to find pretty tank-mates for. We shall see I guess!
The back of the tank will be black... I may make a background for it, but I think it will still be darkish, so light gravel would be a nice contrast, but I know dark gravel tends to show off the fish better.
I don't think I'll be having many plants, either, just because anything with some size and personality will destroy them anyways, and I want to keep my light kelvin numbers low (UV light isn't good for epoxy).
Ok, rambling over, time to go to work. On the construction side of things, I spent a good deal of yesterday figuring out how to make the front, and ultimately buckled under my love for hardwood, and bought some oak 1x4, and 1x6 planks. Hopefully I can find a way to make this thing look pretty!