Dude 800D? Really? Get a HAF 932,942,922,912+,X those cases are beautiful
CPU-Could not have gotten a better cpu
MOBO-Niceee,But I prefer Asus-They have a sale on the beast sabertooth p67
GPU-Nice find you could do some sick gaming on that.
RAM-Pretty good but check if you can find a higher speed like 1800 mhz that would be great
PSU- It's a more than perfect psu to start with-you have lots of space to upgrade and test on so you're good to go.
WC-Get a xpsc rasa 750 or a H70 for water cooling as above posters said you do not need too much wattage for a wc.
HD-Get the F3 1TB. Great speed.Great Space.Great Price.(More like amazing.)
SSD-You should get a Crucial M4 256 GB SSD