Andrew - those are the West System numbers. You should also paint over the faired area with a good Barrier coat such as Interprotect 2000e before bottom paint. The barrier coat comes in white and gray. When I did the entire bottom, I alternated colors to make it easier to see between the 4 coats.

The bottom paint should cover the barrier coat without any bleed through. Since you are using an ablative bottom paint, I'd recommend a couple of coats. One trick is to make the first coat of ablative paint a different color so you can see when the ablative has worn off enough to require repainting.