.2 belt and bulge. Gotta bust the later and deal with the former halving your torp damage

4 5" guns arent going to be very useful in the first place.

In my opinion, carriers should carry the guns not for AAing but for self defense. Sometimes the occasional SS, DD, FF, or even a CL gets through the battle line and is chasing you. If you have guns, you can defend yourself (hopefully) long enough for someone else to kill the ship.