Sounds like your mind is made up and its been a few weeks since the last post, but I just want to offer another perspective. If your engine is old enough to have left the factory with a points type distributor, I would think twice about replacing it with an HEI.
The HEI will give a hotter spark, with less maint. A big bonus for sure. But what you are giving up is simplicity and the ability to troubleshoot on the trail. With a points ignition you carry a set of points, a condenser and maybe a rotor and cap. You can set them with a matchbook and get back to camp or the trailhead.
With HEI if it craps out on the trail the only thing you can do is throw parts at it and hope one of the parts is not defective out of the box. Rare, but it can and will happen.
Plus the expense of spare parts. I have a 66' CJ5 and by the seat of my pants I can tell when its time for a tune up by the way it starts and runs. Plus a rough idea based on the mileage since the last one.
Most of the parts that fail on a points type ignition you can look at and see the problem. Worn rotor contact, carbon streaks in the cap, pitted or burned points etc. Not so with HEI. You need a voltmeter and a troubleshooting book to tell you how to check what.
Just playin' the devils advocate so that you can consider both sides. Let us know what you decided.