the following sequence of error which you pointed out:

trying to load the installer via floppy so I can ftp install, I get the
following errors:

ok boot
floppy                                                                  
Boot device: /fd   File and
args:                                               
Can't read disk
label.                                                          
Can't open Sun disk label
package                                               
Can't open boot
device                                                          
                                                                                

is typically due to the floppy drive in the sparc machine not
working.  Typically, the floppies in the sparcs were rarely
used, and often when NetBSD people like myself purchase the
machines at flea markets, etc, the drive is completely frozen.

this is due to dirt, dust, and the lubricant turning into a
tar-like substance.

the solution is to remove the floppy drive from the sparc,
pop its top, and carefully clean the inside with compressed
air, and relube the motors, gears, and rails which the mechanisms
move on.  Careful not to jolt the heads (need to keep their
alignment).

you can then try booting with the floppy drive hanging out of
the case, observing the rotating disk on the bottom,  the heads
should move back and forth.  it may take a few more attempts to
loosen up all the grime, but eventually it should work just
fine, and boot up.

a working floppy drive will make certain healthy noises when the
drive is accessed (heads dropping on the disk, heads moving back
and forth, etc).  if you have good hearing and still fail to
hear these noises, it is likely that the drive is frozen.

this really should be in the install notes for sun machines, as
it is such a common problem for anyone starting a machine which
has been in storage for a long time.