Reply to Audio 4 DJ Setup

I am looking into buying an Audio 4 DJ for my setup. Currently, I have a Denon MC3000, Traktor Scratch Pro and two stanton turntables. I would like to use timecode on the turntables through the Audio 4, but I am confused on how to set it up. Do I need an external mixer or could I just use the Denon? Would I use the audio interface of the Denon or of the Audio 4?

Thanks