Yeah, if there’s an appropriate sounding “come on,” that would work. Leads into his, “We just landed, okay?”
I don’t have the original cut of the movie at the office, but Finn does say “come on” during the last briefing that was cut since he refuted the 1 in a million shot.
EDIT: The only issue is there is music in the scene and it overlaps with the line. The tone and delivery is good for this idea though. Dang.
Couldn’t you open the multi-track audio file and extract just the dialogue, or at least the dialogue with as little music as possible (if the dialogue track is itself not isolated)?
With the right mixing, it doesn’t seem like it’d be too hard if you know the timestamp. I just did this for the narration of the introduction in my Clone Wars movie edit.