@Erika, I'm currently evaluating myself, at one point i took all requirements needed for PMI-ACP , but i paused and started exploring PgMP, which is most likely my next certification, i am PMP and Systems Engineer, I believe it totally depends on what you plan for future work , Since you are already PMP , i believe we are pretty good a managing some good size projects. And me being an engineering I juggle with Programs that are trickling down to projects with agile mindset. So, i chose PgMP.
I believe if you have lot of projects adding up to programs and there is no individual doing it, that would be a great move , you being an MBA is a + .