sure if I should run a 400 watt system or 600. My only issue is venting the 600. I don't want to ruin my extra bedroom by cutting a hole for ventilation. Also I'm in search of a good reliable seed source. I'm looking for northern lights and white widow. I have a seed from some green crack that I've germinated and have outside for now. Money isn't unlimited but I have a little to play around with.