This has been quite a project moving from a full size ATX case to a Mini-ITX case. Airflow in this case is very finicky and the massive GPU I already had blocked a ton of necessary air coming up and through the bottom of the case.
Installing the Kraken G12/Corsair H55 combo on my 2080 was a drastic and unplanned move but the decrease in temps is astounding. Combined with the Noctua slim fan pulling air through the radiator this is keeping GPU temps almost 30°C lower than with the standard air cooler!
I've also undervolted my GPU at 900mV with no real-world impact.
/u/Fuze911 on reddit 3d printed me up some custom feet for this too. They raise the bottom up just enough to allow a reasonable amount of air up and into the intake fans. I really like the way they look and actually make the RGB glow from the base look a bit better.
Next up is getting all the RGB settled. Looking to pick up some LL120s if/when they go on sale. Also wondering if the RGB strip included with the A1 is compatible...