It all really depends on few different factors: which wheels you’re using, the motor cartridge, how fast you want to go, etc. I’d say 280 RPM on 4" wheels is a good reliable option for 4 motors. I used this gearing on 4 motors before, and I can say it has never let me down. Doesn’t overheat quickly and goes decently fast. But, does look like this game is about speed, so you would probably want faster option, just know it might overheat quicker. Here is a helpful resource about drive gearings.