As i'm a bad guy, i'll tell you to try to install MOS PUP first on a standard FFS partition (make sure that there is not SFS partition), then install the 68k FFS filesystem on the OS4CD and create 2 good partitions, 1st for all the CD content (copy CD0: XXX: all clone), the 2nd for the "system" and modify the startup seq in consequence.
I did something like that in time ...
