Overwhelmed and need PSU help/guidance please

Hello everyone. A few months ago my HX620 finally kicked the bucket after 7 years and I quickly bought a SSR-550RM to replace it just to get up and running again. Since then I have slowly accumulated parts for a new build. The last piece of the puzzle is the PSU. I have been reading up and trying to digest all this info about PSUs, but I still can't make a decision. After reading and searching the web, I ended up here at jonnyguru. This seemed like the most appropriate and likely place I could get some help from. Could anyone recommend me a PSU or two that I can choose from or further learn about in making a decision?



My parts list that will be fed from a CP1500pfclcd:

r5 case(2 stock supplied 140mm fans will be used)

NF-A14 case fan

hero VII mobo

GTX 970 gpu

4790k cpu

212 Evo heatsink

2x8GB DDR3-1866 1.5v ram

samsung 850 Pro 512GB SSD

WD black 2TB 7200rpm HDD

X-Fi Titanium HD soundcard

TP Link wireless NIC



I will be doing some light overclocking on air for now. I would like to leave some headroom for a possible SLI and/or a more aggressive OC with waterloop. I was considering the EVGA supernova P2 1000W/ G2 850W, Corsair AX860(i), and a couple of seasonic offerings. Any input or advice or questions for me will be greatly appreciated, thanks in advance.

Overwhelmed and need PSU help/guidance please