Thanks for you advise.

I must say since I asked I did set up using docker/unraid and the package wg-easy.

It could not have been more simple and does exactly what i need; i did not have to touch the firewall besides opening a port.

Granted my need is ultra simple and if i was to have any more complexity (lets say more than a few other users for example) it would be totally worth learning opnsense a little more and do the setup there. wg-easy does what it says on the tin but does not allow for much customisation… wich is the point really.

Again thanks for the answer