I transferred everything to my laptop and installed a fresh class 10 64GB card in the S3. One quirk of the phone that gave some of my applications fits is that it labels the built-in storage "sdcard" and the add-in card "extSDCard". Ambling Audiobook player will only look on "sdcard" so my books had to go there as did the data for a couple of other applications. What is on the 64GB card is about 8GB of music so far.
One minor disappointment is a lack of a "stay awake while charging" setting. I installed Screebl (there are others) to take care of that for me. I also installed "Folder Organizer" to organize all of the applications into one page of well organized folders full of applications and games instead of multiple pages of application icons. For example the Books & Ref folder has Kindle, Ambling Bookplayer, and Wolfram Alpha, while the Entertainment folder has HBO Go, Max Go, Netflix and Scanner Radio Pro (police & Fire). And all of my audio applications live in the Music & Audio folder. K9 Mail is installed and configured and my fine looking wallpaper is installed and Beautiful Widgets is configured as my clock. I think it's all done except for loading up a bit more music.