Second set of eyes please... Coil & Starter wiring

[HawkX66]

I could use a second set of eyes to check out what I'm doing. I'm changing starters from the old GM style with R & S terminals to a new mini starter style that comes on Gen 6 big blocks etc. They hook up the same as a/m mini starters. The new one doesn't run the "R" terminal that goes to the coil on older cars. I've been running a Pertronix III in place of my points and they work great. They're wired like the pic below. What I'm trying to figure out is if I can omit the yellow wire from the R terminal that goes to the coil the way I have it wired. My understanding is the R terminal is only energized during cranking to give the coil a full 12 volts. The way I have it wired is so the fabric wound wire from the ignition switch, which I think is the resistor wire, triggers the relay. The relay then supplies a full 12 volts to the coil and Pertronix in the distributor all the time including during cranking.