Being that I tried this route too (manochalk remembers that initial thread no doubt lol) let me save you some time. You will run into clearance room with 200mm rads and fan setups. Unless you are will to mod your case, it is near impossible to fit and clear components.
Check out his thread. His setup is best for a HAF X with 360s. Incidentally, you CAN leave the top 200mm fans in place, add a 360 below with push fans and will utilize very nicely. The second external 360 rad isn't necessary unless you are looking to cool gpu as well