Is Petronix solid state ignition upgrade a good option for a 65?

I've been thinking about this upgrade for my 65 Valiant 170 since I've replaced the wiring harness a few years ago. I bought a new engine/light harness from Year One and it was the original type that used points. I currently have a points distributor in my 170 but it's been sitting outside over the winter and not driven. I know it's going to be a problem. I looked at how to install this Petronix conversion kit and it looks fairly simple. But I would opt to keep the ballast resistor on the firewall. It says to keep the ballast resistor you have to Ignitor red wire to the ignition side of the resistance or any other 12 volt ignition power source. Does that mean just splice it in to one of the wires on the ballast resistor? I would hate to have to cut into an uncut harness. Does this kit offer any benefits?