Do you have a workload planned for that? Like everyone told you here, it’s a powerful beast but you need to feed it. If you’re planning to run a plex container and a file share, it’s an overkill. Get a power efficient optiplex, or hp prodesk/elitedesk, or Lenovo Thinkcentre. Put all the ram you can, a fast SSD and a big HDD for storage, you’ll be more than content, and without the guilt of killing 5 whales each time you read a pr0n file.
You can set up a free cloudflare tunnel on your DMZ, then expose the 32400 service vía an application in the zero trust dashboard. That would give you fine control about who can access your server (you can add security policies filtering by country, source ip, and other traffic selectors)