everything you described above is how I have the infrastructure in my private residence home network including 10GB switches and Router Modem.   Not the secondary PSU however and I don't need 100% uptime as a critical condition.    It will not affect revenue even in the worst case scenario.  Whats more important is censorship resistance and sovereignty.   

This is exactly the summary and sanity check I was looking for.
However, I wanted to zap you but could not.