looking for Opinion's on this build

Good Afternoon.

just looking for opinion's on this build, and i also have some question's. Hydrolux pro or corsair Hydro H115i for cpu cooling and if a sound card is really worth it. System Configuration:
Chassis Model: Special Deal Hot Seller - Digital Storm Velox
Exterior Finish: - Standard Factory Finish
Trim Accents: - Standard Factory Finish
Processor: Intel Core i7 6700K 4.0GHz (Codename Skylake) (Unlocked CPU) (Quad Core)
Motherboard: ASUS Z170 PRO GAMING (Intel Z170 Chipset) (Up to 5x PCI-E Devices)
System Memory: 16GB DDR4 2666MHz Corsair Dominator Platinum DHX (Extreme-Performance)
Power Supply: 850W EVGA SuperNOVA
Expansion Bay: Option Not Available
Optical Drive: DVD-R/RW/CD-R/RW (DVD Writer 8x / CD-Writer 8x) (Internal)
Storage Set 1: 1x SSD M.2 (256GB Samsung 950 PRO) (NVM Express) (Extreme Performance)
Storage Set 2: 1x SSD (2TB Samsung 850 EVO)
Storage Set 3: - No Thanks
RAID Config: - No Thanks
RAID Card: - No Thanks
Internet Access: High Speed Network Port (Supports High-Speed Cable / DSL / Network Connections)
Graphics Card(s): 1x GeForce GTX 1080 8GB (NVIDIA Founders Edition) (VR Ready)
Sound Card: Creative Sound Blaster Z
HPC Processor: - No Thanks
Extreme Cooling: H20: HydroLux PRO: Exotic Custom Cooling System (CPU Only)
HydroLux Tubing Style: HardLine Tubing (Requires HydroLux PRO Custom Liquid Cooling System)
HydroLux Fluid Color: Red Fluid (Requires HydroLux Liquid Cooling System)
Cable Management: Exotic Cable Management - Red - (Cable Combs with Custom Color Sleeved Extension Cables)
Chassis Fans: Thermaltake Riing RGB Fans (Up to 6 Fans)
Internal Lighting: Remote Controlled LED Lighting System (Multiple color options and lighting effects)
Airflow Control: Digital Storm Thermal Management Control Board & Software

If you are going to go for the HydroLux Pro, get the GPU cooled as well. GPU cooling keeps it from throttling back performance, as there is no heat soak with the cooler, and maintains a high performance over extended use (like long gaming sessions).

If you want a system with minimal maintenance and easy component swapping, then go for the Corsair cooler. It won't have quite as high performance, but it will be close. Just make sure your caase can breathe easily to keep a good supply of air to the GPU.

Also, drop the sound card. It does pretty much zero, as on-board audio is pretty damn good these days. Your money is better spent on amplification and speakers than the DAC. If you want the absolute best in audio, do an HDMI pass-through to an audio receiver.

honestly, unless you need something right now, if you're seriously considering 4k gaming wait for both the new 4k monitors with dp 1.3/1.4 standard and for Big Pascal (Titan or Ti cards).  the 2017 4k monitors will be able to hit 120Hz and the Big pascal cards will be able to handle 4k w/o needing sli or compromising settings.   

Originally posted by db188 honestly, unless you need something right now, if you're seriously considering 4k gaming wait for both the new 4k monitors with dp 1.3/1.4 standard and for Big Pascal (Titan or Ti cards).  the 2017 4k monitors will be able to hit 120Hz and the Big pascal cards will be able to handle 4k w/o needing sli or compromising settings.

and if the rumors are to be believed, Titan P(ascal) is to be released this August! 

Sept does sound like a more likely release