how should i set up my carbs?

I HAVE A 75 Z1 900. 1015 BORE ELECTRONIC IGNITION WITH 3 OHM DYNATECH COILS 4INTO 1 KERKER THAT IS GUTTED.I HAVE THE STOCK CARBS AND I WAS WONDERING WHAT SIZE JETS I SHOULD USE AND WHICH NOTCH ON THE NEEDLE WOULD BE BEST FOR MY SET UP