Hosting websites over 4g

I have been hosting a few websites from my home server and it has taught me a lot. I have recently had major issues with the electrical storms, Kogan NBN support (Australia), and the NBN network in general. I know 4g is not fast, but I would like to use it so that in the event of a network outage, im not at the mercy of NBN. On to the question!

I run pfsense in hyper v with a 4 port nic which passes through those ports to pfsense.

I realized that 4g ip addresses are not public, which stops me from hosting the websites.

Reading into wireguard and vpn services my plan is to:

• Set up a VPS ✅
• Set up wireguard on the VPS ✅
• Create a wireguard connection on my windows server, and pass that in as an interface to pfsense, so that hopefully, I wont need to change to much on my internal infrastructure.

Does this sound like an OK plan? I'm open to any other ideas where I can achieve the following:

web app >> nginx >> pfsense >> vpn tunnel >> VPS with Public IP (can be dynamic)

Thanks!---