And before deleting any apps, I'd suggest using Titanium to "freeze" them. Make sure your phone continues to work as expected. If you have no problems, then deleted them.
Does the Titanium backup app stay on the phone's or SDcard's memory?
I'm wondering because I rooted my phone but was so excited I was finally able to root, I forgot all about the backup before I flash any ROMs, themes, etc. I haven't done anything but the root because I don't want to rush into anything that'll brick my SGS3 (lol!).
Just to clarify: Once I backup my phone, that's the point@ which I can flash my chosen ROMs, Themes, etc.?