with good cases like that set the front case fan to pull in if the case can take one. the power supply on the bottom will be pulling air in. then the back rear fan is blowing out. if there room some people put another fan blowing out on the top. with the fans want to make sure have the fan headers on the mb to slow the fans down. 120mm fans do hum at max rpm. the side panel i would leave the fans off and use a tall cpu cooler.