Thanks, eswube
Thiel, thanks for the advice. The drawing in the first post has been updated.
I've added the French hull mounted sonar DUBA-25 (since the ASW mortar would be probably of French origin as well, just like the 100mm gun).
Also I've added the Mk 115 director on a raised platform between the 40mm guns.
Is this set-up going to work? Can you think of a more realistic set of equipment?