Honestly this sounds like a bit of a pickle. If I were in your situation I would just use one of the cellular carriers 5g internets. I personally use a T-Mobile 5g internet hotspot with a fresh tomato flashed nether 6700 plugged into it. Then I basically do all of my networking from that. Latency is a fair bit higher (usually about 30-50ms) but upload is significantly better than spectrum.