Well, My Demon Died On Me Yesterday

FWIW, I put in a complete MSD system (box, distributor, plug wires and coil about 3 years ago. It starts better, idles better and runs better.
I would be inclined to try the new Progression distributor. Advance and rev limiter programable off your smart phone Bluetooth. But considering you have a distributor ordered, go with that. I would keep the old one and fix it. Then you have a spare.