sck451
MOST VALUED CONTRIBUTOR
That is the very best liquid cooler. The more expensive ones just add an LCD screen on the CPU block. This looks pretty but doesn't help the cooling! What you want is the big radiator, which is what the H150i has.Dude I'm loving what you built here.
RE the drives, I think you are right. These will be sufficient -- and much safer now you've explained ^^
My only question is cooling. Is there any reason not to get the very best liquid cooler? And the upgraded thermal paste? I am more than 1k under my budget so I would be happy to spend more for a quieter / faster machine
The Corsair cooler also comes with very good thermal paste applied, so there's no need to buy more.
To make the machine quieter, the only real thing you can do is get better case fans. That's probably not needed, but if you do need to, it's an easy thing to fix after the fact, especially as PCS doesn't really stock quality case fans. But the reality is that, with a 13900K and a 4090, you aren't getting silence under heavy load!