Cool looking tank, definitely looks like it has more depth than a lot of the 2.5's I see on the forum (including mine). I would suggest looking around at other nano tanks, see what plants people are using, and jotting down the plant types you like. Once you get a good list of plants going and you do some research on the proper care and conditions for those plants, you can begin to setup a nice scape. I've have spent soo much time recently on the computer reading up and researching this stuff....amazing how much time it seems to suck up.
Welcome to the forums, I can't wait to see this tank develop!