First Gaming PC. Advice?

Budget:3500

Expectations:Single 4k display water cooled

Usage: Mostly gaming with some video rendering

Current configuration:1677679

Chassis Model: Special Deal Hot Seller - Digital Storm Velox
Exterior Finish: Exotic Paint Finish - Apollo White
Processor: Intel Core i7-7700K 4.2 GHz (Codename Kaby Lake) (Unlocked CPU) (Quad Core)
Motherboard: ASUS TUF Z270 MARK 2 (Intel Z270 Chipset) (Up to 3x PCI-E Devices)
System Memory: 16GB DDR4 3000MHz Digital Storm Performance Series
Power Supply: 850W EVGA SuperNOVA
Storage Set 1: 1x SSD (480GB Digital Storm Performance Series)
Storage Set 2: 1x Storage (2TB Seagate / Toshiba)
Internet Access: High Speed Network Port (Supports High-Speed Cable / DSL / Network Connections)
Graphics Card(s): 1x GeForce GTX 1080 Ti 11GB (NVIDIA Founders Edition) (VR Ready)
Sound Card: Integrated Motherboard Audio
Extreme Cooling: H20: Stage 2: Corsair H115i - 280mm Liquid CPU Cooler (Fully Sealed + No Maintenance)
Chassis Fans: Corsair LED Airflow Performance Edition (White) Fans
Internal Lighting: Remote Controlled LED Lighting System (Multiple color options and lighting effects
Priority Build: Please Prioritize: Ship Within Four Business Days After Order Is Successfully Processed

Thanks for the advice. Taking out the video rendering(when I say some I mean very little) would the i7-7700K be the better choice?
This is my current config:1677933

Chassis Model: Special Deal Hot Seller - Corsair Carbide Quiet 600Q
Exterior Finish: - Standard Factory Finish
Trim Accents: - Standard Factory Finish
Processor: Intel Core i7-7700K 4.2 GHz (Codename Kaby Lake) (Unlocked CPU) (Quad Core)
Motherboard: MSI Z270 GAMING PRO CARBON (Intel Z270 Chipset) (Up to 3x PCI-E Devices)
System Memory: 16GB DDR4 3000MHz Digital Storm Performance Series
Power Supply: 850W EVGA SuperNOVA
Optical Drive: DVD-R/RW/CD-R/RW (DVD Writer 24x / CD-Writer 48x) (Internal)
Storage Set 1: 1x SSD (480GB Digital Storm Performance Series)
Storage Set 2: 1x Storage (3TB Seagate / Toshiba)
Internet Access: High Speed Network Port (Supports High-Speed Cable / DSL / Network Connections)
Graphics Card(s): 1x GeForce GTX 1080 Ti 11GB (NVIDIA Founders Edition) (VR Ready)
Sound Card: Creative Sound Blaster Z
Extreme Cooling: H20: Stage 2: Corsair H110i GT - 280mm Liquid CPU Cooler (Fully Sealed + No Maintenance)
Cable Management: Premium Cable Management (Strategically Routed & Organized for Airflow)
Chassis Fans: Corsair Airflow Performance Edition Fans
CPU Boost: Stock Factory Turbo Boost Advanced Automatic Overclocking
Graphics Boost: - No Thanks, Please do not overclock my video card(s)
OS Boost: - No Thanks, Please do not tweak the services on the operating system
Windows OS: Microsoft Windows 10 Home (64-Bit Edition)
Recovery Tools: Windows 10 Installation CD Only (Clean Install with No Drivers)
Virus Protection: FREE: McAfee AntiVirus Plus (1 Year Service Activation Card) (Not Pre-installed) ($35 Value)
Priority Build: Please Prioritize: Ship Within Four Business Days After Order Is Successfully Processed
Warranty: Life-time Expert Care with 3 Year Limited Warranty (3 Year Labor & 1 Year Part Replacement)

Is there anything else I may want? Or anything I have selected that isn't necessary?