Default Install CM10.2 with PARANOIDANDROID 4.0+ G2 (KitKat) installed

Title: Install CM10.2 with PARANOIDANDROID 4.0+ G2 (KitKat) installed

I'm running AOSPA KRT16S 4.4 (PA 4.0 + G2 - KitKat).

I need to install CM10.2.

I need to go back to Stock (Android 4.2.2) before?

OR

Simply make WIPES and FLASH CM10.2?

thank you