Can't fault anything said there but IMO don't get too anal about a degree or two of dwell. Most people don't have a dwell meter and back in the day it was an expensive bit of kit for a workshop. 14-16 thou for the points will work fine and using a 15 thou feeler is a good compromise. If the distributor is a bit worn it will vary a bit anyway. Check the points on each cam lobe and see. It's very worthwhile to clean out all the accumulated dirt and grease from the advance/retard mechanism. On the bench is easier but it can be done on the car too. A good spray down with brake cleaner while twisting the rotor part of the shaft will loosen everything up. There are large holes on the underside of the dizzy body for the dirt to wash out. Lightly oil the mechanism after everything has dried along with oiling the top felt and side oiler. A dab of grease on the cam will greatly slow down the wear on the fibre part. They aren't as durable as they used to be. Recheck the points gap after 1k miles, the fibre will have bedded in by then. If the A/R mechanism has been sticking you might be surprised at the improvement in driveability.