Upgrading CPU and Motherboard i7-7700k (Recommend + Help)

[secian]

Looking at upgrading motherboard and cpu, need new ddr4 ram with it. Current board and cpu heavily showing their age.
Current Specs:
AMD athlon x4 860k
Asrock FM2 A58M-VG3+
Cheap ddr3
850 watt gold rated PSU

I have a 1070 already and this CPU I'd assume is heavily throttling it. (1070 bought pre-mining craze) Got it for $374 which saved me some money for this upgrade.

Budget of $650-$700
Looking at:

i7-7700k
Asrock z270 Extreme4
G.Skill Ripjaws V 16gb DDR4 3200

Also considering moving to the 212 evo for cooling. I have a cheap asetek AIO that is 3 years old but fear leaks and don't want this new system ruined.

With the ram prices dropping I think now is getting to be a decent time to buy. Any recommendations or changes on what I should get instead/wait for would be highly appreciated.

Is this a decent build/worth upgrading to?

Final Expected Build
i7-7700k
Asrock z270 Extreme4
G.Skill Ripjaws V 16gb DDR4 3200
EVGA 1070 SC GAMING ACX 3.0 Black Edition, 8GB
850 watt gold rated PSU

 

[Hellfire13]

You should go with 8700k for more longevity in the future...

PCPartPicker part list / Price breakdown by merchant

CPU: Intel - Core i7-8700K 3.7GHz 6-Core Processor ($339.99 @ Newegg Business)
CPU Cooler: CRYORIG - H7 49.0 CFM CPU Cooler ($34.99 @ Amazon)
Motherboard: Asus - ROG STRIX Z370-E GAMING ATX LGA1151 Motherboard ($191.89 @ Amazon)
Memory: G.Skill - Ripjaws V Series 16GB (2 x 8GB) DDR4-3200 Memory ($164.99 @ Newegg Business)
Total: $731.86
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-05-22 17:22 EDT-0400

 

[Dugimodo]

Not really worth buying 7 series intel chips now, the 8 series is just better. An i5 8400 is a better choice than an i7 7700K in my opinion just to highlight the difference between series. The Ryzen 5 2600x & ryzen 7 2700x chips are a good option as well.

With all these 6 and 8 core chips around building a 4 core machine seems like the wrong choice.

 

[geofelt]

Do not build with new parts and old tech.
I5-8600K will be faster for gaming than the 7700K and equal in multithread performance.
8600K $245
2 x 8gb ddr4 3200 ram $180
Z370 motherboard $125