Rate my setup

Solution
I see nothing wrong with this build. Giving you 10 of 10. I would go with a good air cooler but that is just me I guess.
PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i7-7700K 4.2GHz Quad-Core Processor ($329.99 @ Amazon)
CPU Cooler: Deepcool CAPTAIN 360 273.4 CFM Fluid Dynamic Bearing Liquid CPU Cooler ($98.99 @ SuperBiiz)
Motherboard: MSI Z270 SLI ATX LGA1151 Motherboard ($118.99 @ Amazon)
Memory: G.Skill Ripjaws V Series 16GB (2 x 8GB) DDR4-2800 Memory ($113.99 @ Newegg)
Storage: Samsung 850 EVO-Series 250GB 2.5" Solid State Drive ($99.99 @ B&H)
Storage: Seagate Barracuda 3TB 3.5" 7200RPM Internal Hard...

Zerk2012

Titan
Ambassador
I see nothing wrong with this build. Giving you 10 of 10. I would go with a good air cooler but that is just me I guess.
PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i7-7700K 4.2GHz Quad-Core Processor ($329.99 @ Amazon)
CPU Cooler: Deepcool CAPTAIN 360 273.4 CFM Fluid Dynamic Bearing Liquid CPU Cooler ($98.99 @ SuperBiiz)
Motherboard: MSI Z270 SLI ATX LGA1151 Motherboard ($118.99 @ Amazon)
Memory: G.Skill Ripjaws V Series 16GB (2 x 8GB) DDR4-2800 Memory ($113.99 @ Newegg)
Storage: Samsung 850 EVO-Series 250GB 2.5" Solid State Drive ($99.99 @ B&H)
Storage: Seagate Barracuda 3TB 3.5" 7200RPM Internal Hard Drive ($88.89 @ OutletPC)
Video Card: Gigabyte GeForce GTX 1080 Ti 11GB Gaming OC 11G Video Card ($684.99 @ SuperBiiz)
Power Supply: EVGA SuperNOVA G2 850W 80+ Gold Certified Fully-Modular ATX Power Supply ($117.37 @ Amazon)
Case Fan: Corsair SP120 RGB 3-Pack w/Controller 52.0 CFM 120mm Fans ($62.89 @ OutletPC)
Monitor: AOC U2879VF 28.0" 3840x2160 60Hz Monitor ($345.40 @ OutletPC)
Keyboard: Razer BlackWidow Chroma Wired Gaming Keyboard ($133.99 @ B&H)
Headphones: Logitech G933 Artemis Spectrum 7.1 Channel Headset ($135.97 @ Amazon)
Total: $2331.45
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-04-19 17:37 EDT-0400
 
Solution
PSU - one of those:
https://pcpartpicker.com/product/9q38TW/corsair-power-supply-cp9020092na
https://pcpartpicker.com/product/dMM323/evga-supernova-g3-750w-80-gold-certified-fully-modular-atx-power-supply-220-g3-0750
https://pcpartpicker.com/product/MfJwrH/evga-power-supply-220g20750xr

would recommend getting this one for overclocking:
https://pcpartpicker.com/product/7VZ2FT/asus-prime-z270-a-atx-lga1151-motherboard-prime-z270-a

Get one of those if you want liquid AiO:
http://www.swiftech.com/aio.aspx