Just got this in the mail today

Use the ballast resistor that came in the kit. You need one to protect both your coil and the module and using their's insures the correct value. Don't get confused reading about a "dual ballast". That was for an early design that needed a 5 ohm resistor to protect the module itself. Your module has 4 pins so wouldn't use the 2nd ballast.

Did the kit come with a coil? If not, do the instructions say what coils work? I have seen some round factory ones that have "electronic ignition" printed on them, so they probably vary from the points ones in primary resistance. Maybe you can use an MSD Blaster 2 coil. All confusing to me, which is why I prefer HEI and no ballasts.