Need some advice on a budget gaming PC

Aug 11, 2018
Link to build:

Hi guys, I'm building a gaming PC for my friend which will be his first formal high-end rig. The computer will be mainly used to run games like PUBG, 7 days to die, league of legends and should be able to perform well under heavy cpu/gpu load. I would appreciate any feedback or changes I should make because I have been out of the loop in the hardware world.
The changes I made were slight and some based on personal preference.

PCPartPicker part list / Price breakdown by merchant

CPU: Intel - Core i7-8700K 3.7GHz 6-Core Processor ($347.00 @ Amazon)
CPU Cooler: EVGA - CLC 240 74.8 CFM Liquid CPU Cooler ($89.99 @ Amazon)
Motherboard: ASRock - Z370 Extreme4 ATX LGA1151 Motherboard ($155.99 @ SuperBiiz)
Memory: G.Skill - Ripjaws V Series 16GB (2 x 8GB) DDR4-3200 Memory ($149.99 @ Newegg)
Storage: Samsung - 850 EVO-Series 500GB 2.5" Solid State Drive ($126.00 @ Newegg Marketplace)
Storage: Seagate - Barracuda 2TB 3.5" 7200RPM Internal Hard Drive ($57.89 @ OutletPC)
Video Card: EVGA - GeForce GTX 1080 8GB Superclocked Gaming ACX 3.0 Video Card ($474.98 @ Newegg Business)
Case: NZXT - S340 (Black/Red) ATX Mid Tower Case ($65.99 @ SuperBiiz)
Power Supply: EVGA - SuperNOVA G3 650W 80+ Gold Certified Fully-Modular ATX Power Supply ($69.89 @ OutletPC)
Operating System: Microsoft - Windows 10 Home OEM 64-bit ($94.89 @ OutletPC)
Total: $1632.61
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-08-11 19:09 EDT-0400

1. EVGA AIO is one of the better performers if u want an AIO, $10 cheaper.
2. Asrock very well reviewed motherboard will do everything you need.
3. Faster cheaper RAM. Gskill is number 1 currently.
4. Bumped to a 1080 for $40.
5. 750 watts is overkill. 650watt unit is plenty of extra headroom and barely more than the 550 watt.
if he can wait...look at the newer intel x390 chipset mb and the 9000 cpu chips. if there a local micro center look at there combo deals. nvidia in two weeks i dropping info on there newer gpu. on the ssd pick up a m2 or nve for speed. the older ssd top out at 5xx speed the newer m2 slot and nve are faster.