Build suggestions for Dad

[Ctown0812]

So I finally convinced my dad to let me build a pc for him. He's always bought a prebuilt system from HP, but I finally got him to crack and let me build one for him, and maybe teach him a thing or two.   He mainly uses his pc for word, excel, outlook,  etc.  But he also does some video editing with Sony Vegas Pro, and some other program that I think is Adobe.  Why he uses both, I have no idea.  I don't know much about video editing, or the components required, so I'm basically looking for help picking those components to better suit his needs.  I've only built computers that were primarily used for gaming, so I really don't know the difference (if there is one).  We have a budget of $1500-$2000, but if we need to go the extra mile and spend a little bit more, we will depending on how much it'll benefit us.  Thanks in advance for the input!

[Mohenjo]

Hmmm ill put a system together but i recommend getting a 970, an i7 5830k or maybe a i7 6700k, 16gb of ram, a 2 or 3 tb and a 240gb SSD. And then a maybe getting a 4k monitor? 

[TheRandomness]

PCPartPicker part list / Price breakdown by merchant
 
CPU: Intel Core i7-5820K 3.3GHz 6-Core Processor  ($374.99 @ SuperBiiz) 
CPU Cooler: Cooler Master Seidon 120V 86.2 CFM Liquid CPU Cooler  ($59.99 @ NCIX US) 
Motherboard: ASRock X99E-ITX/ac Mini ITX LGA2011-3 Narrow Motherboard  ($259.99 @ SuperBiiz) 
Memory: Corsair Vengeance LPX 16GB (2 x 8GB) DDR4-2666 Memory  ($89.99 @ Amazon) 
Storage: Samsung 850 EVO 250GB M.2-2280 Solid State Drive  ($91.99 @ NCIX US) 
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive  ($45.88 @ OutletPC) 
Video Card: EVGA GeForce GTX 950 2GB SSC ACX 2.0 Video Card  ($154.99 @ SuperBiiz) 
Case: Silverstone Sugo SG13B Mini ITX Tower Case  ($39.99 @ Amazon) 
Power Supply: Silverstone 500W 80+ Gold Certified Fully-Modular SFX Power Supply  ($94.99 @ NCIX US) 
Total: $1212.80
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2016-01-21 11:39 EST-0500

 
Holy crap levels of overkill but why not.

[SuperShires]

Probably get away with using just an i7 6700 and 16gb ram, other than that what ever floats your boat.