Why do I assume that? Because you said it in your post #4.Why do you assume I'm using coil packs?
The objective is to make an abomination with mechanical timing, but solid state switching and individual coils to
If the exact dwell were that important the coils wouldn't work at different speeds, since the dwell changes based on RPM, on top of that, the dwell depends on things that are easier to test than attempt to calculate using ideal numbers, like how long it takes for the sensor to react to the trigger signal it's supposed to be receiving, and how much dwell the specific coil actually needs in order to function.
Are you for real or just trolling? Dwell angle is a known thing no matter what the RPM is. And it is a measurable function of the rotation of and timing between the crank and camshaft. As the RPM increases the coil changes into more of a flyback circuit so it takes less time and energy to produce a spark.
Can I ask your age and automotive mechanical experience?