I made a very similar build almost 2 years ago.

I did not like the Jonsbo N4. The HDD temps were bad. The case amplified HDD noise and was a pain to build in. I used a Silverstone SFX power supply. I had two of those PSUs fail in less than a year.

After the second expensive SFX PSU failed, I decided I did not want to buy another. I changed cases to the Fractal Design Node 804 and bought an inexpensive ATX PSU. I have been much happier with my build after those changes. My HDD temps dropped by about 10 degrees Fahrenheit. The case is much quieter and I was impressed by the quality.

A lot of the SBCs or n150 pcs have limited RAM upgradeability.

You might look at the old HPE Proliant Microservers, like gen8 - gen 10. You can get them with 16GB ram included for $300. They’re low power and they use the cheaper ddr4 ram.

SYS-A22GA-NBRT

The $500,000 10U AI server or is there another one?

I still can’t add 3rd party software that isn’t in their App Store

That doesn’t seem right… I think you can use their “Container Station” to make an LXD or Docker container with whatever you want. You may have to enable “advanced mode.” https://www.qnap.com/en-us/how-to/tutorial/article/how-to-use-container-station-3

Cool Russian propaganda bro.

Decades-old sanctions don’t need reporting. We all know

Killing thousands of protestors is not on the same level as refusing to let them buy airplane parts.