-get a cheaper motherboard. something like a asrock extreme4 makes more point
-get a heatsink like a d14 from noctua. dont use fisher price watercooling
-if you are not doing 3hrs of rendering work a day, dont get a i7. a i 3570k is fine
-get 8gb of ram if you are not working. and if you are to get 16gb, get a 2x8gb kit
-a xfx 550w is enough for a single GPU system
-get a mech keyboard.
its better to get a full ssd instead of using a cache. something like a samsung 830 256gb SSD will be good