Thanks for the feedback. I have thought about the a/c issue. I examined a friends setup and he uses 4 lights. They are paired as two sets, and cooled with a 6" fan for each pair and the heat is carried outside. I'm not going big, I'm just using the room that I have and want to do it right the first time because I can afford to do this again. I won't have many plants at first, but at some point I will grow the legal maximum allowed in my state (and for my room size) and I don't want to have to go back and buy stuff.

Has anybody used the sun System lights and digital ballast? They seem very affordable.