1x 200mm TOP (with room for another 200m, or 3x120mm if you have a water-cooling radiator)
1x120 or 80mm (i forgot) GPU Duct (optional)
1x80mm GPU bracket. (optional
If you really wanted more, tape a 120mm to the bottom and suck air through the grill there (optional) or put a 120mm in some spare drive bays (may be tricky)
Then whatever fans are on your PSU (which could act as an exhaust if you wanted), GPU and CPU.
no you dont need all those fans. the stock configurations are pretty good. just position a fan above the gpu, the usual exhaust fan, and above the cpu socket. that way it will cool your system without usuing more than 5 fans. since you are mostly not going to go extreme, a regular case will do you fine. if you really want to even, just take one of your desk fans and use that to blow air into the case