If you go down the VPS route, a headscale server on a cheap $3.50 VPS would be the way to go. Wouldn’t even have to deal with IP addresses at that point, while still being able to self-host all your services, with the cheap VPS being a glorified switch/firewall.
Warehouse worker who self hosts stuff here.
It all started when I was a teenager and I lost access to my photobucket account…