Need some suggestions and tips for this build

[JackoKov]

link: https://pcpartpicker.com/user/JackoKov/saved/JvcFdC

Looking for suggestions and Tips for this Upgrade for my Gaming PC that will be used for only gaming.

I already have the parts:

• 
  Seagate - Pipeline HD 1TB 3.5" 5900RPM Internal Hard Drive
  Gigabyte - GeForce GTX 1060 6GB 6GB WINDFORCE OC 6G Video Card
  BitFenix - Nova ATX Mid Tower Case
  EVGA - 500W 80+ Bronze Certified ATX Power Supply
  Lite-On - iHAS124-14 DVD/CD Writer

So I would prefer if these were not to get changed however I dont mind if necessary.

 

[JackoKov]

Also I just noticed that the Intel Core i5-7600K is the same price (on Amazon) as the i5-6600k while giving more performance would this be worth considering as they are both priced at £195.97?

i5-7600K Link: http://amzn.to/2leU8EF
i5-6600K Link: http://amzn.to/2Dt7lQW