what would you all recommend for a cabinet with dimensions 71x15x12. I will only use about 55-60 inches of its height. I have also already bought a 180 cfm exhaust fan and a can filter purchased here http://homeharvest.com/climatecontrolexhaustfans.htm I hopefull would opt for a 400 watt vs a 250 but I worry about the temps. How significant of a difference would it make in such a small space between a 400w and a 250w. Thanks for your time blades