If power / noise is a concern then look at the small form factor PC options on eBay.
Some of these will take two or three drives if you remove the CD / DVD drive and can handle a fair number of tasks if memory is increased.
I’ve been using my old Mac mini (late 2012) under Debian and Docker - maxed it out to two drives and 16GB - these pop up for £40 - £50 now and then and about take as much power in idle as my Pi boards but way more CPU abilities when running.
Not cheap but excellent quality https://lincolnbinns.com/shop/internet-of-things-iot/raspberry-pi-enclosures.html
I used them for a pair of bespoke Pi 4B 10" rack mounts and was very happy with everything from the project management to delivery time. The face plate cutting and coating was excellent - no rough edges or smudge ‘paint’ in site.
The HAT may cause an issue for their standard enclosure (it’s a total wrap around providing cooling) but drop them an email and see if they can help.
I’ve had minor issues swapping cd drives over due to the mounting in a couple of units (HP or IBM IIRC).
The drives came on a slide tray that clipped in rather than have standard mounts or holes. Did not take long to add holes and use a converter tray that fits into a normal 5 1/4 inch drive bays and mounts 3.5" or 2.5" drives.
I did see one Wyse sff machine that had a laptop cd in it - no way could I fit anything in that :-)