1st off...Welcome aboard:pint:
for backing up my disks I created ADF's like you and backed them up on a few devices since this is the best way to enure if something happens I can always re-create the disk again
I've got 4.25 floppies from my 64 that still work great and that's going back 30+ years but I can't get 90% of my CD backups from the 10 or so years ago to work at all go figure