i romantically think that I'd enjoy this arrangement (somewhere more tropical however) ... but in reality I'm not sure how long I could last without fiber to the home ... j/j
This is why I'm excited about Starlink (and potentially other big LEO constellations as well -- but Starlink is the one I'm most optimistic about right now).
Looks like they have decent LTE coverage on EE at least, which I was surprised at.
Signals can propogate fairly far when there's no buildings or other stuff in the way (just sea!).