I'm trying to figure out what type of lighting to get for a Growlab 4'9x4'9x7. There are so many choices. I'd like to get a 1000w HPS set up. But I dont want to have to buy another complete lighting set up for vegging with a MH. Or are there other reasonable options. Also air cooled lighting vs. non cooled. Or how about a dimming ballast vs. air cooled? I've read so much on information im getting confused on wich direction to go. This set up will be for a Ebb and Gro 12 pot site. Any info is greatly appreciated.