Advice for video editing workhorse

Currently working off of a 2011 Macbook Pro and I need a kickass desktop to do all my editing on. My hope would be to buy an Air as well to keep around so my goal was to keep the price down. I do edit 4K so not sure if anyone has experience with that.

PCPartPicker part list / Price breakdown by merchant

Type	Item	Price
CPU	Intel Core i7-4790K 4.0GHz Quad-Core Processor	$327.99 @ NCIX US
CPU Cooler	Corsair H60 54.0 CFM Liquid CPU Cooler	$67.99 @ Newegg
Motherboard	Asus SABERTOOTH Z97 MARK S ATX LGA1150 Motherboard	$269.00 @ B&H
Memory	Crucial Ballistix Sport XT 32GB (4 x 8GB) DDR3-1866 Memory	$159.99 @ Adorama
Storage	Samsung 850 EVO-Series 500GB 2.5" Solid State Drive	$159.98 @ OutletPC
Video Card	EVGA GeForce GT 740 4GB Superclocked Video Card	$113.99 @ SuperBiiz
Case	Fractal Design Define R4 w/Window (Titanium Grey) ATX Mid Tower Case	$88.99 @ SuperBiiz
Power Supply	Corsair 760W 80+ Platinum Certified Fully-Modular ATX Power Supply	$119.99 @ Newegg
Wireless Network Adapter	TP-Link TL-WDN4800 802.11a/b/g/n PCI-Express x1 Wi-Fi Adapter	$37.24 @ Adorama
Monitor	Samsung U28D590D 60Hz 28.0" Monitor	$549.99 @ Best Buy
Keyboard	Apple MC184LL/B Bluetooth Wireless Mini Keyboard	$65.00 @ Adorama
Mouse	Apple MB829LL/A Bluetooth Wireless Laser Mouse	$65.00 @ Adorama
	Prices include shipping, taxes, rebates, and discounts
	Total (before mail-in rebates)	$2045.15
	Mail-in rebates	-$20.00
	Total	$2025.15
	Generated by PCPartPicker 2015-09-23 09:04 EDT-0400

Thoughts?

submitted by TITTIES_N_UNICORNS
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What is missing? Please comment to help!

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