You could put your loader and maybe evev the OS on dougg3's ROM SIMM if you populate the empty SIMM Slot pads on all the MicroQuadra boards.

Stacking a rack of Quadra 650 boards for your NetBSDbox would be even better, full .040s and AAUI all around with oodles of lovely 72pin SIMM Slots for trag's 32MB sticks! }