One Fan up front as intake, three on side as intake (Tuniq won't allow all four), one up top as exhaust, one in Tuniq blowing towards rear, and one in the rear as exhaust.
the reason its useless to have the top fan as an exhaust is because its too far away from the components that generate heat. Having it as an exhaust would just pull out cool air that the side fans bring in. Having it as an intake fan allows more cooling for the RAM.