I choose option 3.

The van is sketchy and wide open. Easy target.

The shop is blown out, so all sorts of scavengers are probably in there, making it also an easy target.

Gotta get up high, and be difficult to reach. It's obscure, so it's secure. ;) Plus I can spy on those passing by. I'll whittle something sharp, create some camouflage, and hope I don't get shot. Maybe find some birds eggs or a tasty squirrel.