I'm running Linux, so I don't think the Windows batch file would work on my PC. Maybe I'll look into this when I have some of the other issues worked out that I'm puzzling over.
At this point I have Marlin 1.17 flashed (it might be 1.1.8) and it seems like it's working. Marlin 1.1.9 didn't work- the printer wouldn't even home without throwing an error. I think for now I'll just use Marlin and see how it goes.
I did finally receive my Octoprint kit and I got it ~95% working- I still can't see the webcam stream but it works great for sending jobs to the printer, pausing the print, etc. I'll probably start another topic on the Octoprint issues so these don't get all mixed up.