Okay, got this thing mounted and she looks alright! Removed the obnoxiously bright LED that everyone seems to like to work with today and soldered in the original A1010's front mounted LED. This little project turned out pretty nice...
Sill can't get Disk B to play nice, but it does work if I disable Disk A via the dipswitches. Still thinking it must reside as DF0: internally, but am not entirely sure. Reading up on others' experiences, looks like Disk A and Disk B are NOT to be used simultaneously, not without some more hardware modification anyway. No clear and concise pointers on just how to do that yet though. So for now, looks like this product works as a single drive floppy emulation of sorts. At least there are 15 slots you can add disk images to. Just be prepared to count the beeps and remember what you've placed where. :laughing:
May end up selling or trading this for boxed games on my want list, so if you're stateside and interested, LMK!