worry about climate, ventilation, temps etc before you decide on a grow space. Just cause its small and convenient doesn't mean it will be worth your while in the long run if it isn't properly thought out. If you don't want too expensive of a light and don't have that much space I would go with a 250W metal hailide light or something similar. A T5 fluorescent light will also work well. Hydroponics | Hydroponic Supplies has great prices and options on many grow supplies.