Well, as is, you can put a 120 in the back, a pair of either 120's or 140's in the roof as well as the front. As far as cooling, you shouldn't have an issue with any of the Corsair WC setups, but you are only going to be able to do push/pull in the front.
Rad wise, a 120 or 240 can go up front, a 120, 140, 240, and 280 tops can go up top, but remember you only have about 55mm up there clear of the Motherboard. With the drive cages removed, you have a compartment where you can place a pair of fans, and then 125mm till you hit the board: but I would say only 100mm since you need room for the SATA cables to plug into the board itself. On the bottom of the case, you have 390mm from the mount for the power supply to fan cage up front with 110mm from bottom to lower edge of the Motherboard, so subtract the length of your PSU and cables, and that will give you your floor room for pumps and the like. For the rear fan, with Corsair Dominator GT RAM in my motherboard, I have 60mm of room between the back wall and the RAM heat sinks. From the CPU to the side panel, I am getting 160mm of space for those using large air coolers.
All this is assuming two things:
All the drive cages are out, (Takes about a minute to do both, and is non-destructive) and in my case, the Mobo is a Rampage IV Gene.