I wouldn't strafe Gun positions if I were you, I asked this question recently and was answered a single word : Suicide...
Bombs : for The buildings take some 1000lb bombs (the HQ takes 10K I think) and for the ACK ACKs a single 100lb should be enough...
I dunno about the Splash Damage, I am a fighter pilot (to be, still learning...) and only did a few bombing runs...
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Saint
DCO 186th Wardogs (Falcon4 Squad)
http://www.wardogs.org/ "Firepower Mate, that is what separates the men from the boys..."