Hey,
1)
The i7 is $100 more than the i5-4670K and won't benefit you much. That extra money could go towards a better graphics card.
2) No need for FOUR sticks when you can get just two (2x8GB). I recommend:
* 2x8GB 1866MHz CAS9 G. Skill
3) 120GB Samsung 840 EVO is better and the Samsung Magician software is really great (update firmware, apply overprovisioning, benchmark, auto-optimize.)
4) GTX780 3GB
This card is now $520; I love my GTX680 OC (same as 770 OC) but there are many times I wish my card was a little better. THIS card:
http://pcpartpicker.com/part/evga-video-card-03gp42784kr
5) Motherboard:
I can't say much about the board you picked. It may work fine but it's new so few customer reviews. My favorite Z87 board is the Asus Maximum Hero VI which has SupremeFX audio. That adds better sound than any Realtek solution so if audio is important you may wish to consider it:
http://pcpartpicker.com/part/asus-motherboard-maximusvihero
The Hero is $200 but that would be the price of a cheaper motherboard and a sound card.
6) CPU cooler:
- if you really want liquid cooling then for $10 more get the newer model, the H110
- I really like this air cooler which is $50:
http://pcpartpicker.com/part/xigmatek-cpu-cooler-darkknightiisd1283nighthawkedition
- You should do a mild overclock of 4.1GHz or 4.2GHz to the i5-4670K to keep temperatures low and lifetime high.
- **WARNING: many experts recommend REVERSING the fans on liquid coolers to INTAKE air to blow over the CPU voltage regulators as they can get hot with no airflow from a traditional air cooler.
7) Power Supply:
The one you picked is a great power supply, but you can get similar for your needs for much less money. My recommend is THIS one:
http://pcpartpicker.com/part/evga-power-supply-120pg0750gr
*If you did get a DEAL on the one you linked for $95 then get it. I saw no evidence of this in your build though.
SUMMARY:
My recommend is save money on the CPU and other places where there's little benefit and put it towards the EVGA 780 3GB. I should add that newer games like BF4 want more than 2GB for optimal performance.
I also have mixed feelings on liquid cooling, and since the i5-4670K heat output is fairly low at 4.2GHz or less my advice is the $50 air cooler Iinked instead. It will probably run quieter as well in normal gaming conditions.