Fill this out so we can help you more- http://www.tomshardware.com/forum/261222-31-build-advice
First thoughts on build-
-The MSI Big Bang is overkill and overpriced.
-You need quad channel ram for X79 motherboards.
-10k hdd's are overpriced and not worth it. Just get a larger ssd and a slower rpm storage drive.
-1000w psu is overkill for 2 680's. A 850w PSU will run them with no problems.