Default [Q] Using Kies for Backup & Restore on rooted/custom rom

Does anyone know if it's ok to restore a backup form Kies to get my pictures and music? I'm rooted and running a custom rom form the international threads. I'm not wanting to restore firmware or anything like that, but I was wondering if something would get screwed up if I was to install another rom and then try and restore my pics and such.

Basically I'm wanting to use Kies as a way to sync and store all my current stuff just in case I lose something when doing tweaks and such.

Thanks in advance for you time and help.
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