The thing with dive bombers is that your best defense in case of a fighter attack is try and evade them as best as possible until help arrives. If you had a formation of tbms, vals, sbds, etc., you're kind of tied in to staying level so as to not loose your drones making hard turns. +1 to formations for the level bombers (tbm, kate) though.
If you want to attack the enemy using dive bombers, then I'd suggest posting a mission to get more dive bombers and escort fighters giving you "strength in numbers" rather than attempting to accomplish your goals single handedly.
(Curse my slow typing!!!)