According to what I looked at your case already comes with 5 fans. What do you want to do, refrigerate it???
I wouldn't go that far!
Prime95 for about 2 hours I get temps around 54c. I've seen some people get around 46-49 with a Hyper 212+. I'm planning on doing some heavy overclocking on my limited budget (hence no liquid cooling) and I'm trying to find the easiest way to go about reducing my temps for the moment.