Ok I watched up until the Purchase of the Droids scene...
We have missed two rather unimportant background characters who don't have EU names that I know
Imperial Gunner #1 "There goes another one"
Imperial Gunner #2 "Hold your fire, there are no life forms"
I was close on what Praji said, he said "The battle station plans are not on the ship. An escape pod was jettisoned during the fighting..."
We have some more Rebel Pilots and that may about do it