the free version of both will be fine, theming isn't done through ROM manager
Sweet! Sorry for the barrage of questions but let's say that I backed up my apps using TB and I picked the Apps+System Data option. Should I still not restore the data that those apps have been backed up with? Or when TB restores an app, will it restore the data too? I think that the system data was backed up when I created a nandroid backup earlier today. It would be nice to have some way of storing the settings of the apps that I have installed, is this possible and safe to restore to a new ROM?
When you use TB to back up your user (downloaded, market) apps it does back up your settings and data for them. Upon restoring them after flashing a new ROM you will have the option to restore just apps, just data for those apps, or you can restore both. System app data should not be restored, it causes problems.
That is correct.
You could probably get away with restoring data for system apps on some ROMs but honestly all I have ever seen is people bringing up issues related to it. There is actually a pretty good guide for titanium stickied in the Droid Hacks section. It has been a while since I read it but it was helpful when I first got it.