I decided that the cathedral ceiling being extra tall and inaccessible, was too difficult for me to tear out myself. I enlisted the help of some demolition experts who I contacted through their ad on Craigslist. They came over with some extra scaffolding and a roof shingle stripper and made quick work of tearing out the west wall, the ceiling and the insulation.
After the teardown I had lots of clean up to do but I kind of like the whole bare bones look of the rooms!