Start watching for someone who has an old communication tower, old ham or CB guy who has gotten out of the hobby and buy the tower for a song. Then set it up, get above the trees and have fast unmetered internet.
BTW anyone who wants to do a project like this let me know, I will be more than happy to help out. I have setup links building to building over a couple miles with off the shelf stuff that cost about 150 for the whole project. For that matter I read about an island community where they were unable to get decent service as the telco didn't want to invest in a better connection. They would be out of service for days and even then it was barely better than dialup. They banded together to form a coop and built their own network.
We don't have neighbors either. Nearest one is 1 1/2 miles away, and around the hill. We are out in the sticks pretty much. The trees are huge. Some walnuts are 100' high.
It does sound like an interesting project to try though. We have a contract with exede for now that is another pesky issue.