Years back I ran an Accel Super coil for 2-3 years with no ballast and had no issues. Then one day, the car failed to start. I ended up replacing the super coil with another Supercoil. That one lasted about a month, the last one died at a major car show. The guy at the Accel booth told me some of the Super coils survived without the ballast, and some didn't.
I added the ballast along with Supercoil #3 and it ran the 4-5 years I owned the car.

It seems like it might not be a very hard thing to try, add the ballast with the new coil and see. If it runs OK with the ballast, run it. Gene