@ Grolson,
Yes you have to be rooted to use Titanium Backup.
It will put the backups on your SD card (no need to get a new one). & you can back it up on your laptop if you so desire.
When you freeze apps in TB, they will NOT appear in your app drawer.
Yes you will need to un-root to get the updates from VZ. Yet another reason to run a custom ROM,
when the devs upgrade their roms, you usually get the VZ upgrade as well.
As for using ATK, there are 2 schools of thought on this, that you should kill the apps and the other is
leave everything alone (unless there is a problem) as the OS handles memory usage far better than any Win
OS does. I used to use ATK all the time, like after exiting the browser (I was worried about data usage) but
in reading on these forums, I don't even bother with ATK anymore.
And not for nothing, I recommend making a backup of your system as soon as you gain root. Even if you have absolutely NO plans to load new roms & such. I'm a belt & suspenders kind of guy, can never have too much protection.
As for rooting, the first 2 times I rooted (had to remove root to upgrade) I did it the old fashioned way, typing commands into Terminal Emulator. This AM (after recovering my phone from bricking it) I used z4root. In all honesty, I could have typed in the commands just as fast as z4 did the job b/c I had to run it about 4~5 times with a battery pull each time. But I'm rooted & have my rom re-installed thanks to Clockwork Recovery, Droid X Bootstrapper & my constant need to create backups.