Thanks for the comment bud! I've actually been aware of this for a long time but I've never had an issue mounting with the resevoir at the top and below the pump. But I also swap hardware out very regularly.

If I wanted to get 4 or 5 years out of this AIO then I would move it to the top as an exhaust, but I've actually already started putting together parts for my next custom loop.

I'm actually going with this absolute behemoth as my rad setup and then planning on keeping this as a permanent loop for both CPU/GPU for the future and then I'll just have to get a new water block for my GPU as I replace them.
https://www.dazmode.com/shop/watercooling/radiators/triple-core-radiators/mo-ra3-420-lt-black-extreme-radiator-9x-140mm/

Man, you will kill your AIO pump with that placement. Pump should be below radiator's body top point (yours is above).
https://www.youtube.com/watch?v=BbGomv195sk

haha oh bro I know its horrible. I've been waiting for some really good ATX 3.0 PSU's to come out as there was only like 3 total when I first got the 4090.

I used to care a ton about the aesthetics of my build but since I switch hardware so damn often I have just stopped caring as much these days haha.

Excellent build! Too bad those 16pin power adapters are ugly as hell.