BGary,
I have been thinking about that a bit. I would copy a normal boot disk and then begin to REM out commands like ADDBUFFERS, RESIDENT and maybe try and not load workbench - you will have to do all the actions from the shell/cli. A basic workbench shouldn't have too much extra stuff on it. By not loading workbench you will probably save the most amount of RAM. Try booting without the "C:Copy >NIL: ENVARC: RAM:ENV ALL NOREQ" or similar command, but you might have to alter the assignment to this "ASSIGN >NIL: ENV: ENVARC:".
Just perform one action at a time and reboot to test that it all works fine still. You will have to copy over the ADF utility to the test workbench boot disk so you will have it when you need it.
Pete :-)