The intent of this unit was to provide a dedicated AA escort destroyer to the KM. According to wiki, Z24 actively engaged with the coastal air arm of the french coast in 1944. Shooting down several aircraft. Her AA was increased, first by a twin 15cm turret with 60° elevation in 1942, later by 6 extra 20mm cannon in june1944. Ships of the class were fitted with radar. (I had the t24 erroneously in the ship list, and have corre ted it now)
With regard to SA's - Heavy AA has been tied to VT fused proximity shells thus far. A potential range 1 attack might be once off or of a "harrassing fire" type that only hits on 6. Alternatively, there is the AA specialist, AA barrage, desperate AA SAs to consider.
B25 Mitchell has a range 1 strafe ability. Used it quite a lot to damage or sink lightly armored units. I'm good ith any of the AA abilities here personally...
I'd be good with that. Looking again at the history, and german destroyers. I'll suggest raider as well - its not on any other zeroster but is on scheer and hipper, which z24 aided in norway. It also fits for the bay of biscay operations