Coverage is likely to be pretty sporadic. In relatively flat terrain, a phone can connect to a mast or tower at surprising distances as that distance largely depends on whether things such as hills are in the way or not. That's why sometimes a phone at the top of a mountain can connect with a mast 30 or 50 miles away. I would expect masts to follow roads, so reasonable coverage along much of the Barrier Highway but not necessarily on Oak Park Road as far as the farmstead. On the other hand, it's likely that at some point stations are so isolated that Starlink becomes essential (and short wave radio/ham radio for the old timers).