You missed it in post #9 where the OP changed the location, increasing distance from 400m/1,300 ft. to 1.1 km/3,600 ft. If I understand correctly, that was done to provide AC power.and i still don't understand where the 1.1km came from when the OP was regarding ~400M...
Certainly the OP needs to decide on a location in order to determine suitability of any approach.