well basically, i'd said no fans for intake. you want as much suction as you can get. with fans blowing in AND out, you create positive pressure. you want negative pressure. if i were you, i'd switch all fans to exhaust on top. if you can and that cabinet is yours (or no one cares about it), i'd cover the holes from the 2 doing intake now, and create a passive intake (no fan, just a hole) at the lowest possible point in the box. cold air sinks and all. you should already be seeing temps drop but that should really help. if i can ever help you with instructions and a parts list for that light setup i use, just ask!