you dont really need 6 fans at once. I would keep one or two as spare. I have that case and i have 2 front intakes, an intake on the door, one top exhaust, and one back exhaust. I am only keeping 3 on (one front intake, door intake, and back exhaust) until i can get a fan controller because it gets too loud
Have 2 front intake, 1 side intake, 1 rear exhaust and 2 top exhaust.
One of the front intakes and the rear exhaust should already be installed. The acoustic profile of the side vent is horrible with the 120mm fans. I cut out some pantyhose and put it on the side fan vent to eliminate the terrible noise.
Careful about that side intake. More fans does not necessarily mean cooler. Try and plan the flow of air. If you have air intakes coming from all different directions, you can end up creating vortexes inside the case that will trap hot air in small pockets and end up overheating your parts when your system temps could be reading quite low. What you should be aiming for is one side of the case with big intake fans, which carry cold air that touches every piece of the computer on its way through and then exits on the opposite side, and always UP. So if you had nice big front intake fans on the bottom and then high rear and back top fans pushing out that would give you good flow through the case, touching first the hard drive, then starting at the bottom right corner of the mobo and passing through to the top left and then out.