If you have a reflector on your bulb it is absolutely fine and yes, you could install movers and all but WHY? They will only move minimally in a 4x4 area considering the size of a top-end reflector. Not to mention the heat buildup there. Often a 600 is sufficient for your sized area and can be a superior acquisition. Less electricity to alert authorities, less heat and smaller heat signature, more productive per watt usually.