Kryonaut isn't known for lasting a long time something like Arctic MX-4/6 would be a better choice if you want longevity. The DRAM has a bit high latency and AMD's recommended speed is 6000. You do not need a 1000W PSU so you could knock it down to 850W assuming that's cheaper. MSI has had recalls and poor customer support regarding failure of some of their water cooling units. I'd highly recommend going with an Arctic Freezer II instead. You're buying a budget SSD which there's nothing inherently wrong with you will not be getting the best performance out of it. If you want a budget SSD I'd highly recommend going with the Solidigm P41 Plus instead, because they have custom software which makes them perform better. Moving up to a Samsung 980/990 Pro, Solidigm P44 Pro, SK Hynix P41, WD SN850X, or Seagate Firecuda 530 would get peak (non PCIe 5.0) performance and one of those should be available for $120-130.
I'll second going up to a 7700 if it's in the budget.