Hmm....what do you think of a doubledened solution similar to the middeck hangar and deck to the one used on the CG-47 or Sovremeny. I am thinking of a low quaterdeck with guns and missilerail and a helicopterpad on a higher deck level.
I think each gun needs a director, atleast the 57mm. This ship can engage up to eight diffrent threats simultaioously - 4 long range and 4 at last ditch.