My recommend.
*I recently was looking at the Asus Hero VI Z87 motherboard and came away very impressed. It's $200. Apart from other features the SupremeFX audio was interesting; a superior solution than any Realtek onboard audio. Anyone spending a lot on a PC should get half decent audio. An inexpensive, half-decent sound card of similar quality still costs $50 or more. The board has also gotten great reviews. I consider the MOTHERBOARD and PSU the two most important parts relating to quality (if PSU has issues it can cause intermitten problems, or die and damage things, whereas replacing a motherboard can be a huge hassle especially if the same socket as your CPU disappears.. ).
My list, but much room for change.
*Carefuly to double-check compatibility for all parts.
1) i7-4770K
2) suitable PWM air cooler or good liquid cooler
example:
http://www.newegg.com/Product/Product.aspx?Item=N82E16835118046
example 2: Corsair H110i
example 3:
http://www.newegg.com/Product/Product.aspx?Item=N82E16835214023
3) Asus HERO VI motherboard
http://www.newegg.com/Product/Product.aspx?Item=N82E16813131989
4) 16GB or 32GB DDR3 (depends on video editing task if 32GB would benefit)
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231572
*32GB DDR3 2133MHz G. Skill shown. Good reviews, 4x8GB, single kit optimized for Dual-Channel (not quad).
5) EVGA GTX 780 w/ACX cooler and backplate (*Warning, lower-clocked versions exist for almost same price but reference cooler. Backplate is $20; I recommend adding to prevent sag/flex over time.)
http://www.newegg.com/Product/Product.aspx?Item=N82E16814130918
6) 250GB Samsung 840 Evo (minimum 120GB)
7) BD-burner with M-Disc compatibility
8) 2TB or 3TB HDD
9) case:
http://www.newegg.com/Product/Product.aspx?Item=N82E16811139022
*above case just an example (and wider, shorter than normal but great design if it fits). The 540 comes windowed or non-windowed (I hate windows on cases).
Make sure
a) case fits desk or wherever
b) graphics card fits internally (lengthwise)
c) front USB3
d) front/rear case fans (if needed. good idea)
e) radiator fits (i.e. Corsair Air 540 supports the Corsair H110i).
10) Power Supply:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817182073
Note:
- PSU customer reviews VERY important
- ensure enough 6-pin/8-pin connections
- ensure enough power if you decide on SLI (single GTX780 really is awesome though)
11) Windows 8 64-bit OEM
*I strongly recommend W8, not W7 but get START8 from Stardock ($5).