Hi Lea,
Yes, you are going the right way !
To my experience LR import from camera or from card reader to internal
drives OK.
I had problems while importing to external USB drive or to internal
drive + backup to external USB drive.
( I don't know about Firewire )
When you shall fill the drive and swap it with another one it is easy:
Open LR, Library, Grid view (like many slides in the center window )
You will see on the right hand above each slide icons made of question
mark + film
roll over one icon: "photo is missing"
Click on this icon for one of the pictures and a little window will open
saying:
"The photo "XXX-123" (for example) could not be used because the
original file could not be found.
Would you like to locate it ?"
" Previous location: F:\DATA\.....\XXX-123" ( remember the file name !)
and buttons: "LOCATE" and "Cancel"
Press "Locate" and find this same file on a new hard drive letter.
While you did it to one picture, LR automatically will do the work for
all other images in the same file.
Keywords will operate as usual.
You can import your work images to one Catalog and your personal work to
another.
Under "File" press "New Catalog" give it a name. ( "Private" for
example ) and locate on a hard drive.
Now you have like two LR softwares. To change from one to another you
have to go to: "File" , "Open Catalog..."
It is not important to put the "Private" images on different drive
because when you import images LR learn where they are stored.
Hope this help
Pini