Need Help with new PC build ( A GOOD one)

I just started to build my new PC. And I had to make a few compromises due my to budget being max-out.
Only to point out. Here (German) are parts more expensive 10-30%.
I need a couple of fresh ideas.

Intel Core i7-6700K 4.0GHz Quad-Core Processor
be quiet! PURE ROCK 51.7 CFM Sleeve Bearing CPU Cooler (already bought)
MSI Z170A GAMING M7 ATX LGA1151 Motherboard
G.Skill TridentZ Series 16GB (2 x 8GB) DDR4-3200 Memory
MSI GeForce GTX 1070 8GB Video Card (already bought boosting to 1967MHz no oc stock voltage )
Thermaltake TR2 600W ATX Power Supply (already bought)
Fractal Design Define R5 Blackout Edition ATX Mid Tower Case (already bought)
A-Data Premier SP550 240GB 2.5" Solid State Drive (already bought)
Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive (already bought)
Asus PG279Q ROG Swift 27.0" 165Hz Monitor

http://pcpartpicker.com/list/DvkJwV

whats sort of useage? just gaming? also whats your budget in euros for those of us not in the rhineland.

one idea is to use a g4400 as a starter cpu.
start out with 8 gig then move onto 16 gig later.
start out with a cheap trashy MB then upgrade to a nice one
this vid has some ideas.


nice choice on the big screen....the most important part:)

Good question- its for a butter smooth gaming experience 60+++FPS,g-sync,1440p,144Hz+ monitor IPS. So i need the power to drive it.
Budget is 2500€ but 800 € is already gone for GPU,Case,Power sup,Cooler,Storage..

i personally would get a 120 or 144 hz monitor as 144 is already pushing what the human eye can perceive, and then spend the money saved on a better ssd, but you already bought yours. would also use a different psu but to each his own brand.