I am planning on getting an silver hydraulic alienware case from directron.com, but i dont know what to do about my fans and cooling. i know for sure im goning to get an amd system with a thermoengine and delta fan and a front 80mm case fan and an 60mm exaust fan in the back. i was also thinking about putting a fan on the lower left side to keep my pci and vidcard and stuff cool. should i get a 80mm, 92mm, or even a 120mm? will a 120 be overkill? thx for you help.