I would begin with a base of charcoal, small to medium wood chips on top of that, sphagnum on top of that. For lighting I would use T5 bulbs. The misting would be nice but you would have to be very careful of too high humidity. I think a mini fan would be essential. That is where I get hung up - trying to find the little fan. Also, I would add some branches to allow tying small plants on to, make several levels of growing space. You make me want to start one as well.......