Finishing a build - would like some advice

[Auxis]

Hey folks. So, I've just about finished putting together a build, and would like some advice on some parts of it.

I'll start with my build:
CPU: i7 6700k Skylake-S 4GHz 8MB
CPU cooler: ID-Cooling Frostflow 120L Blue LED
Motherboard: ASUS Z170-AR LGA1151 DDR4 ATX
Memory: Corsair 8GB (2x4GB) DDR4 VengeanceLPX Black C15 3000MHz
OS drive: Intel 540s series 120GB 2.5" SSD
Storage: WD Black WD2003FZEX 3.5" 2TB 64MB 7200rpm desktop hdd
Graphics: Galax GeForce GTX950 OC 2GB GDDR5
Card Reader: none
Optical drive: ASUS DRW-24D5MT 24x Black SATA DVD writer OEM
Sound card: on board/integrated
Case: NZXT Phantom 530 Black full tower
PSU: Corsair RM650x 650W 80PLUS Gold Modular
OS: Windows 10 64-Bit

And I believe that covers the relevant parts of the build.

I'm building it through a local store that I've been recommended, I don't have a strict budget but I don't want to go to ridiculous prices.

So, what I would like advice on:
- I'm mainly going to be using it for WoW, D3, Hearthstone, and possibly some other games that may pique my interest (I usually play other games on my PS4. see; Witcher 3, DA:I, etc.) Does the build seem fine to you? Normally I would ask my bro, but he's got his mind on more important things atm. Don't want yo disturb him.
- The PSU: is it adequate, excessive, not enough?

Cheers for the help/advice, if any Posting this before bed, so I won't be back for a while.

[Thunderball]

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i5-6600K 3.5GHz Quad-Core Processor ($330.00 @ Umart)
CPU Cooler: be quiet! PURE ROCK 51.7 CFM Sleeve Bearing CPU Cooler ($49.00 @ PCCaseGear)
Motherboard: ASRock Fatal1ty Z170 Gaming K4 ATX LGA1151 Motherboard ($189.00 @ CPL Online)
Memory: Kingston FURY 16GB (2 x 8GB) DDR4-2400 Memory ($96.00 @ CPL Online)
Storage: OCZ TRION 150 240GB 2.5" Solid State Drive ($89.00 @ CPL Online)
Storage: Seagate Barracuda 2TB 3.5" 7200RPM Internal Hard Drive ($98.00 @ CPL Online)
Video Card: EVGA GeForce GTX 1060 6GB GAMING Video Card ($399.00 @ CPL Online)
Case: Phanteks Enthoo Pro M ATX Mid Tower Case ($109.00 @ PCCaseGear)
Power Supply: SeaSonic G 550W 80+ Gold Certified Semi-Modular ATX Power Supply ($122.00 @ CPL Online)
Optical Drive: Asus DRW-24D5MT DVD/CD Writer ($19.00 @ Mwave Australia)
Other: Windows 10 - Kinguin.net ($36.38)
Total: $1536.38
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2016-08-24 03:54 AEST+1000

Your build is very unbalanced. You dont need an i7 and water cooling, 3000Mhz memory (get 16GB though), SSD is bad, case and PSU are GROSS overkill, videocard is REALLY bad.