So I've decided I'm going to rip down the walls and insulate the rimjoists and put up a vapour barrier. The basement is going to a living area and it's important that it stays warm during the winter. I was thinking for the rim joists to install 2in extruded foam board and seal it with expanding foam. Then reuse the pink batts and run the plastic vapor barrier from the bottom of the foam boards to the ground. Stapling it to the studs. Is this the best method?