I think you are looking for a 4 way switch.
Those you have don't do that:
4PST = 4 poles single throw (eg ON-OFF)
4PDT = 4 poles double throw (eg ON-OFF-ON)
The 4 is the number of connections (poles) on the bottom of the switch you can wire to, not the number of directions.
But do you really need four directions? Are the possible positions for that cockpit switch:
Rocket
Safe
Bombs
Then a double throw would do.
