Feel better soon, Blossom.
I just got a 32GB USB so I could back up my iTunes and music folder. Normally I would have gone with my months old backup, but I just recently added about 35 songs, so it seemed better to go with USB. I also added the iTunes folder from My Music which should have the other file iTunes need when I restore. I'm not quite as anal about my iTunes metadata as I am about my Calibre metadata, but close

Plus I spent a lot of time organizing it and downloading covers from online. iTunes didn't seem to recognize a lot of my early 80s British and German music.
So as soon as all of that finishes transferring (and I do one more check to ensure I didn't miss anything) I will start the reformat.
I hope everything is back up and running by the end of the Kobo contest. If not I will just use my laptop to get the books I want and wait to download them. A few days if necessary shouldn't make me too twitchy - lol.
Good luck, nkd431. Moving computers is always an adventure.