Distributor: Single Point vs Dual vs with Pertronix vs....

So my '65 273 Charger engine is getting broken down. Pulled and distributor to assess and look forward to options. First problem is that the riveted breaker plate wire is barely hanging on. Also, this is very likely the original which would put it at 90k miles just for background.
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This is among many other electrical related issues with the car so far.

Looking at Options: Keeping in mind at this point I don't know if the engine is any good and part of the Get Running and Driving 2 thread.

1. Wondering how hard to replace this wire. Assume I'd either have to disassemble the distributor or grind the rivet and screw a new wire in it's place.

2. Replace with cheap off the shelf single point dizzy (by far cheapest option).

3. Replace with cheap off the shelf single point and add Pertronix (making an assumption that there's no or little difference between single and double point units if they're updgraded with Pertronix).

4. Replace with Pertronix distributor or other similar higher performance dizzy.