I’m not sure whether it’s specific to this application (I don’t think with the exception of PiHole projects I’ve ever seen a Pi used as any kind of network device so I’d be impressed to see how you do it!) But I’d check out this series of links I put together for headless setup on a Raspberry Pi, should be quite useful in at least connecting to the Pi remotely for a few applications so that you can start setting this up.
