Building a gaming pc, Any suggestion?

I was bored, so I parted out your list. Figured this would also make it easier to pick apart. The GPU was priced at what I could find via amazon for a new card. You can get cheaper for used, but the options for that card are pretty limited since it's a gen old now.
PCPartPicker part list / Price breakdown by merchant

CPU: Intel - Core i7-6700K 4.0GHz Quad-Core Processor ($309.99 @ SuperBiiz)
CPU Cooler: Corsair - H110i 113.0 CFM Liquid CPU Cooler ($114.99 @ Amazon)
Motherboard: Asus - ROG MAXIMUS VIII HERO ALPHA ATX LGA1151 Motherboard ($199.99 @ Newegg)
Memory: Corsair - Vengeance LPX 32GB (2 x 16GB) DDR4-3200 Memory ($319.99 @ Amazon)
Storage: Samsung - 850 Pro Series 512GB 2.5" Solid State Drive ($243.94 @ Amazon)
Storage: Western Digital - BLACK SERIES 1TB 3.5" 7200RPM Internal Hard Drive ($69.99 @ SuperBiiz)
Video Card: Asus - GeForce GTX 980 Ti 6GB STRIX Video Card ($679.99)
Case: Corsair - 780T ATX Full Tower Case ($164.99 @ Amazon)
Power Supply: Corsair - 1200W 80+ Platinum Certified Fully-Modular ATX Power Supply ($369.99 @ Amazon)
Optical Drive: Asus - DRW-24F1ST DVD/CD Writer ($17.84 @ OutletPC)
Case Fan: Corsair - Air Series AF140 Quiet Edition 67.8 CFM 140mm Fan ($21.88 @ OutletPC)
Total: $2513.58
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-07-12 21:14 EDT-0400

Now like everyone said, your PSU is WAY overkill for what you're doing. A 550w would be fine, 650w if you want a bit more headroom.

A comment on the suggestion of the NH-D15. It's a great cooler, it's also a royal pain in the ass to use. It's heavy, so you have to make sure you're careful whenever transporting it. It's huge so case selection is limited. It has a very limited RAM selection due to its fan configuration. Between the limitations on case and RAM, you have to be careful how you select your parts. That said, it is whisper quiet and I love mine, but if I was building today I'd consider something like a Cryorig H7 unless I was really intending on OCing the hell out of it.

A comment on the WD blue vs Black. The Blacks do have a better performance (marginal and you'd never tell the difference but technically existing), but the main reason for going with a Black is for its better warranty. Is it worth the $30 difference between it and the Blue? That depends on how paranoid you are. Either way make sure you have some form of backup in mind.

Now my own questions, why are you wanting to go with a last gen CPU?
Do you really intend on OCing your CPU or are you just going for cream of the crop options?
Are you only gaming on this or are you doing content creation as well?
Is there a reason you're going with a 900 series GPU instead of the current 1000 series?
You didn't include an OS in your build, do you have a copy you're transferring over to the new build? If so is it OEM or Retail? This will matter when it comes to activation purposes.