Question I have a ROG THOR and a Phankets P500A Case

[JJLopera]

I have an issue with this set up; the PSU must be put upwards in order to be able to see the OLED display through the psu shroud; but the P500A doesnt have ventilation holes on the psu shroud... Will it be okay and have enough room to be able to breath? I know this PSU's fan remains stopped almost every minute, just in some special cases it gets going, but im worried.
I know an easy solve would be to drill holes, but i dont really wanna damage my case...

 

[JJLopera]

Is worth mentioning that i have a I9 9900K and a 2080S, and that the PSU is 850w, but i dont really use that much of energy.