Instead of using the fast battle planer, I recommend to use the mission editor instead.
Choose your attack aircraft, select the appropriate A2G weapons and set a flight path, that will come across the selected target base. There you can have other planes, radars, vehicles and other stuff as targets, select them as stationary objects. For your attacking aircraft, you have to designate targets for them, use "attack" instead of "waypoint" for the routing. There is another menu item where you can select either an object (one of the stationary objects you placed on the base before), a coordinate or the base a main target.
Be sure, that the flight path is not too low or too far away from the target, some testing is advised to find the suitable parameters (speed, altitude, approach direction) for each weapon/aircraft/target combination before.
Good luck !