Option b of course, rent cheapest vps, ionos.ca offers plans for 2$ per month, it’ll be cheaper than Google fiber, you can also use sshuttle https://github.com/sshuttle/sshuttle on your openwrt router and connect everything to it be it by cable or wireless, then Nintendo gaming will also have that port forwarding because your whole traffic is going to go through vps
Responsibility, way too many people do things without any thinking and making everything into shitshow because of not thinking