Do you have a static IP at home? How does your cloudflare setup work?
I've always been unable to pull this off completely as I always want a way to SSH into my home network - but maybe there is a better way I can pull off this sort of 'break glass' functionality.
Guacamole (sorta) gives me that. If CloudFlare or nginx or Guacamole have problems then I'm hosed... but I work from home so remote access isn't a huge concern.
And I've got nothing terribly "household critical" at home, just the PiHole needs to be running to keep everyone happy. I do wish that PiHole had an HA solution. I've been tempted to set up a pfSense / pfBlockerNG HA pair but that's a lot of overhead just for DNS.
You could run 2 Pi’s or a Pi and a container in another always on machine for example. Then just point your router‘s primary to the Pi and secondary to the other instance.
IMO, using a Tor hidden service is a (damn near) perfect solution for this.
have you made it work? my Tor career ended in college after running an exit node - no visits from the FBI, just got auto-klined from every IRC server since I was on the list of proxies.