So from your first reply, I'm going to read it to mean that I should not use their InWall units except as supplemental units in some locations - as they will most likely be stuck behind some hefty piece of furniture due to being ~16" off the ground.

Let me explain where the garage would be - exactly where you'd expect it to be on a normal house on a normal lot. The sample lot in the link has it facing a lane behind the house. But your suggestion of a repeater in the nearest corner of the house is valid.

Thx