I will agree with TheRezonator, the fastest way for me is to look at the empire tree where your squads are, then hold ALT and select a bomber from the empire tree (left click, any one will do). This will select all bombers in the region. Then hold SHIFT and ALT + left click again on fighters to select all bombers and fighters in the region.
Sorry, Sawakaki, I do not recommend binding strikecraft to the number keys. Reserve your numbers for your cap ships so you can use their abilites without autocast.