TL;DR: Do I have to wait for the Full to sync before a completely separate hashboard in my Standard is able to mine? That seems pretty silly.
FWIW, my single standard unit was able to sync and mine at the same time.
It took it 48h roughly to sync, which is pretty good. CPU temp was in the 70s / 80s, but that should be no problem for modern chips. In fact, high end desktop CPUs can operate even close to 100C before throttling.
I would just position the thing on top of something else so it can more easily suck in air from the bottom for the little Orange Pi fan.
So it's even weirder. I just ended up leaving it all running overnight...and what do you know--Nicehash is reporting that it's been successfully mining since I posted this message...The web dashboard still shows that the miners are inactive: everything is showing zeroes, even after I refresh the screen. I'm happy that it's successfully mining, but the whole reason I bought these things was to resell them and set them up for normies that want to get into mining in a plug-and-play manner. If the web dashboard doesn't work, that defeats a lot of the purpose for my use case.
Are there logs I need to look at? An update I need to run?