lol, nice man I was just about to say, you should fuck that intake fan and use BOTH as exhaust. But you've already got that covered, so good for you! And you probably already knhow this, but I'ma say it anyways just in case. But your fans will be twice as effective if they are PULLING air from the inside of the tent out instead of 'pushing' it out. Does this make sense?
EDIT: And I found this out early aswell, but those little computer fans are fucking WORTHLESS! lol, no where near enough air flow to be helpful at all almost! lol