if you want to try another rom or redo it just go into your safe mode and reflash the zip file. it should do the rest for you like delete old files and such. after it finishes just erase data and cache stuff.
btw if your messing around with your safe mode and roms after you get done just revert it back to non safe and reboot to go back to your stock rom. you shouldnt have to restore because your non safe shouldnt have been touched. restore seems to be buggy sometimes so i dont use it right now. as long as you dont mess with your non safe mode with your stock rom you shouldnt have to restore.