I still need disk 2 disk copying, Xcopy/Cyclone backups, and found some copies only work when copied from DF1: or DF2: so having 2 external drives is preferable. Looks like using 2 floppies off the internal header then and 1 off the floppy on the actual A1200 board and routing it back inside the case and using a 5 1/4" bay.
OR... just daisychain them from the A1200 external floppy connector and fit them in the 3.5" and 5 1/4" bays provided the cables are long enough