Hey, I've been looking at the Corsair 700 and on the corsair site it says it can have up to 4 120mm fans which I guess is the 3 top ones that can be used on a triple rad and the other is the exhaust fan is this correct? Then it also says it can have 3 140mm fans and I know one is for the hard drives which sits below them, but where are the other 2 (I think one may be on the shelf though not sure)? but the last one I have no idea, where is it?. 
+ If I decide on this case should I use every fan? or just some of them? also I read on one forum you need to reverse the exhaust fan to make it an intake, is this correct?

+ If I decide on this case should I use every fan? or just some of them? also I read on one forum you need to reverse the exhaust fan to make it an intake, is this correct?