I do think your right about the 400w in the supercab. I really like yours though looks neat an clean. On my way to check on the grow! Keep up the good work!As far as mass produced cabinets if you want to but one, i personally think the SuperCloset is the best value on the market right now. I say go with the 400 watt and no CO2. 600 watts is too hot i read. Depending where you live you are looking like 2300-2400 including shipping for a real nice unit with everything you need. If you pay money order or check they may knock some money off. At least that was the offer they made me when i called to ask questions.