September 14 the new X99 Chipset will be released wich means if you buy x79 now you buy obsolete hardware if i was you i would wait a month, but other than that your build looks good.
Here is my Suggested build:
- Asus or gigabyte socket LGA 2011-3 X99 Motherboard 299$-500$
- 8gb-16gb of DDR4 Memory 300-500$
- Haswell-E 5930 6 Core or 5960X 8 Core CPU 1100$-1500$
or you could go the less expensive but more economical route:
- Asus or Gigabyte Z-97 socket LGA 1150 Motherboard 200$
- 8-16GB DDR3 200-300$
- Haswell i7 4790K 300$
Good Luck with your Build ;-).