Finally had some time and daylight to work with so I opened up the old bus control panel up top and to my luck discovered that the only "decommissioning" they did of the bus was to disconnect the main 12v power supply to the bus controls. That wire was still live, however, and I pulled the panel out enough that it connected with the screw clip to the left and sparked up and scared me pretty good.
I hooked that back up to see what all circuits still actually worked and everything did! The fan fired up, the heater fan fired up, the running lights lit up (except for a bad bulb on one) and the flashers and stop sign even worked when opening the door. I'm going to disconnect the flashers and stop sign circuit and use that for something else (12v tv?) since I'm technically not supposed to use those lights anyways.
I spent a few hours after that with a razor blade and heat gun scraping off all of the reflective tape on the outside of the bus to get ready to prep for whatever paint job I decide on. I also took most of the interior decals off as well to get back to a clean slate.
For now, the seats are staying in until after the trip in April, but that will give me time to collect ideas and cheap materials. Tomorrow I'm driving a few hours to show my buddy the bus and talk ideas and cook out, then a group of us are going to pile in and tour the christmas light displays.
Also, I was able to get insured with liability only for the skoolie, which was easy since it was titled as a G30 van and not a bus. The tag agency gave me no hassle either, I'm totally legal! However, I need to see what I can do to cover all bases for this trip we are taking in April since there will be 10 of us on the skoolie most of the time.
Here's a pic of the inside as well as the cool seat cover that came with purchase.