Df 03ra gearing option help
 

Hi, i have a Df03ra and have upgraded to a novatech brushless 3000kv 13.5 turn and esc combo. I am running a 4000 7.4 Lipo and futaba 2pl. My question is i have the option of running either 29t or 32t pinion gear and 75t or 78t spur gears. I am using my car for road use. What is the best gearing setup and what difference such as acceleration etc does the different gearing make. Thanks