Look forward to it. I've always had big tanks (even 4 at one time) and 18 months ago downsized to just a 40g cube with a 40g sump/fuge that are all DIY built.
What do you plan to keep in it? I went for all corals and anemones that fluoresce well under blue leds. In the evening it looks like the night time jungle scenes from the movie Avatar and with just blue leds it seems to glow in the dark!