Pretty much, except for the "modify /etc/fstab" part. If the drive is partitioned and formatted (but not mounted) lmce will find it sooner or later and ask you a few questions, normally that's all that needs to be done.
Do you see any problem in using a combination. Like one HDD being a subdirectory mounted under public>data>videos>family
and the second one left unmounted (this one has tagged media unlike the family directory).
Greatly appreciate your help.