If you can source them (afraid forum rules dictate i can't link) - Crucial Ballistix 16GB 3600 MHz is quality e-die memory with excellent timings and works out cheaper thna the 3200MHz set (3600 MHz an ideal for 5000 series). They have tight timings for 3600MHz memory, slutty and will usually allow their settings to be tweaked (there's a large thread within the memory forum on this if you want to play).

The 970 EVO is not worth the premium - the quality WD Blue, with 5 year guarantee, will have no discernible speed difference in everyday use. I would put the money saved towards the better CPU - if you're still undecided - or pocket the savings.

 

I also recommend the Gigabyte B550I AORUS PRO AX motherboard, no chipset fan and gets great reviews.

I bought one myself for an ITX build, still not built it yet though.

 

I see that the ram issue has been covered above.

I got the 970 evo plus as I wanted a nvme with a quoted longer life span and dram for my primary drive as I got fed up with drives failing. I wasn't as worried about the 2nd nvme as it just contains my steam library, the size of that mattered more to me.

The gigabyte board can take 2 nvme drives, I would recommend this as good balance between lifespan and price for a primary drive on Overclockers as long as you have a second drive to also take some of the wear and tear. If you are only going to have one drive I would usually recommend the 1TB version unless you are sure 500GB will be enough for your use
▷ WD Black 500GB SN750 M.2 2280 NVME PCI-E Gen3… | OcUK (overclockers.co.uk)

Video on dram less drives https://youtu.be/ybIXsrLCgdM

 

Don't know if you have seen this
https://youtu.be/fjUscSRLwks