Well if you don’t have a static IP, then your reverse proxy is going to break when your lease changes anyway. Not sure what your intended goal is for access and to what, but this is certainly a more costly and complex setup than needed for whatever it is.
Could also run pihole or adguard on your network to just start blocking ads all across your devices as a starter step. Get an OpenWRT router to make it super easy, or just run a standalone pi as a DNS server.