Posting this late. Matt and I started on the bus. The first day of real work was spent removing the seats and the ceiling shell.
We also needed to replace the oil pressure sensor. Took the part into the local Navistar/International dealer.
Matt sanded down the old insulation and we managed to remove the rest of the chairs with the help of our roommate Jake. He hopped under the bus and saw that we had a nut on the end of the bolts, so we hunkered down and just had someone on the bottom holding the nuts in place.