I’ve been through this whole process and wanted to make the best choice and explore all options myself. In the end my conclusion ended up being what most people online recommended after all: keep NAS and compute separate and that Debian is best for a Linux server. Now I have a Synology NAS and a 12th gen Intel mini PC. I run most of what you mention above and it works great.
I spent ages looking at so many sources to learn and get this set up. After I got it all done, I found this is one simple guide that basically covered the whole process and I really with O found this early: https://thecybersecguru.com/tutorials/self-hosting-guide/







I’ve completely eliminated my use of Amazon with retailers on eBay. It has worked out well where I am.