B50 boot options

Two of these machines have landed in my possession and I'm trying to 
figure out the best hardware setup to make them usable. The current plan 
is to add a PCI USB 2.0 card (with internal connectors) in the second PCI 
system slot. Connected to that will be an internal USB-to-SATA adapter 
with a 2.5 inch SATA enclosure (hosts M.2 SATA type SSD sticks).

For booting, the existing 1.44 floppy would be replaced with a GoTek 
floppy emulator, ideally to use as the primary boot device since the 
firmware likely wont be able to boot the USB connected SSD. I have a 
similar setup for a PReP machine, but it uses a SCSI2SD hardware emulator 
as the boot device. An UltraSCSI emulator doesn't seem like a viable 
option, so the GoTek seems to be the best option, but I'm uncertain if the 
ofppc machines can boot NetBSD from a floppy drive.

Has anyone successfully used the floppy drive as a way to boot to a USB 
drive on a ofppc machine? On the PReP machine, building the primary boot 
image required a custom stripped down kernel so it could boot (some sort 
of 2MiB limitation), but in this case for a floppy image, it will need to 
be even smaller I suspect.