I'd say Final Cut or Premiere since you're just trying to time out storyboards with images. After Effects isn't a good editing software. You can use After Effects but it would make more sense to get Final Cut or Premiere since they're made to do that.
All 4 could work, just matters on which one you'd prefer, but since you're new to all 4 of them, it doesn't really matter which one you pick.
You might need to learn Toonboom or After Effects anyways if you want to get into animation so maybe try one of those?