This!

*Arr Suite, QBT, and a Jellyfin Server. Done and done. There are scripts to set it all up in less than 30 seconds…

How about mounting the rack a few inches off the wall?

I recently hunted for a rack mounted case for an ATX MB and PSU. The best I could find is 17.9" deep. Is your rack’s rear end closed? Any way to remove the rear panel? There is a site that’ll make you a custom rack mount case I came across. But it was mighty pricey.