I got mine on Saturday (4/5/14) and am about half way through assembly and set-up.

For your enclosure, consider the option that you MIGHT eventually want to increase the Y axis with longer tracks, a longer belt, bigger platform (and heated bed), and Y carriage.

Given that, maybe go with just a large box enclosure minus the slant on the front. Maybe instead go for doors on the sides, held in place by magnets?