That's what I did also, but I don't think there are any effect if you destroy the parked planes.
The moment the mission start, I straight away ordered the squadron to attack. This way by the time the cutscene is over they'll be almost on top of the airfield already instead of next to me. Also ordered Frank to do his thing.
First pass I took out the AA guns. If you time it just right you can take out the 4 AA guns that's next to the runway by the time you reach the end of the runway. After that I just do an Immelmann and destroy the last AA gun.
After that straight away go max throttle towards the bombers. By this time there should be around 4 or 5 Zekes harassing the bombers. Take them out. Keep an eye on the runway and the radio. If you see a new wave of Zekes taking off straight away head to runway and take them out before they can take off. Use rockets, guns, spit, anything.

Then mop anything that manages to takeoff. Usually you can take out 4 or 5 of them before they can get airborne.
You can use the rockets to during the dogfights also.