I wouldn’t look any further. If you have the Holley coils(aka IGN1A), and you are running them directly from the ECU, you already have the best ignition for your application. The only step up would be some sort of all out magneto ignition.

It is my opinion that the benefits of CDI go away when the multiple spark drops out, and those benefits don’t return until over 9000+ rpm. The benefit being full, “adequate length” spark.

Both CDI and inductive have pluses and minuses. The rpm and hp range that most people operate their engines in would be best suited with a multi coil inductive set up. That’s just my opinion.