At this point, the primary issue with IIc+ is that it won't boot the
spvhd. Both the IIgs and IIc+ try to access the spvhd a bit before its
firmware comes ready, so you generally need an immediate Oa-Ctrl-Reset
after powerup. Then, you can do PR#5 and boot from the internal 3.5
diskette. When P8 comes up, as many as three virtual disks will be
recognized (assuming you aren't using an ancient ProDOS 8).
I don't consider this any sort of show-stopper and I'm sure Cedric will
sort out the firmware.
Steve