[@Mihndar]I think you're underselling the speed of airships a bit.
Zeppelins in WW1 could reach 100 km/h or so and the Hindelburg traveled at 160 km/h, IIRC.
They were slow by aircraft standards where fighters not capable of reaching at least 400km/h were considered outdated.
But otherwise airships were quite fast on their own.
Similarly if you have room for 75mm guns I think you can easily carry bombs by the metric ton. Think of Kirov Airships from Red Alert.
Avalia has outright air warships so I don't think you should worry.
My airships also carry dozens of bombs and up to 24 aircraft with crew to service them.