Some updates (wow this thread is gathering dust!):
The floppies needed to be formatted, but I also discovered that they were permanently write protected, so before the seller shipped them, he put tape over the holes.
PBD 210: The system hung, unleashing on of Sys. 7.5.3 bugs and corrupting the data on the drive (just the OS). Trying to figure out a way to fix it.
The 128k logic board was brand new, but something is wrong with either the RAM, RAM decoder, or something. Still need to fix it.
I also had a conquest today, my first accessory for an Apple II, a Silentype! I sold a bunch of items on CL just to buy this, and I'm glad I did. Paid a decent $56 for it. Now just to get an Apple II and a Silentype card, or an Apple ///.
I also find it funny that I'm now looking for a computer to use with the accessory, not the other way around! I'm also skipping the swapmeet this month, but I'll hopefully go next month.