My 575 is running NetBSD 4.0.1 quite happily... much easier to install than older versions I'd tried. FP emulation is still pants, so you will need to upgrade to a full '040 is you want it to actually run ;-)
I've always used CopyII+ for formatting drives, but mine are all IDE, so I'm not sure if you need to do anything special for SCSI. Once you've got it formatted just copy over PRODOS and BASIC.SYSTEM and you're good to go.
Bear in mind that the Apple II scans the slots from highest to lowest at...
Looks like I'll be out this time as well, too much going on... as for 300 Baud, it will be out "sometime" after xmas. If anyone wants to guest-host the WW, send me a PM.
I have 2xAA's in my IIgs, I just bought a battery holder from Radio Shack... The clock's drifted by a few minutes in the last five years (presumably due to the voltage being a tad low), but aside from that it works fine.