ignition coil questions

I would worry more about correct wiring, than your coil and ballast resistor values. Check ignition supply voltage to ballast and see if it is close to battery voltage.

A resistance test is only a small part of the picture, and not a good test of a coil. Things like turn-turn shorts will not show up since the resistance change is too small to measure. A turn-turn shorts caused by overheating damage on insulation makes for a sick coil. A coil failure may result in a weak orange or red color spark, or intermittent spark.