Notes
I took some liberties with the firing arcs, since a Corellian freighter resembles the YT-1300 (pg 264, EotE) very closely. I decided using our Hard Points would be more beneficial with another mounted gun dorsal (below) to go with the first one ventral (above). The new one taking up a hard point.
The concussion missile was too much to pass up, I figure the pilot can be in charge of firing that if need be, but with restricted ammo it's probably a good idea to use it sparingly.
Lastly, since none of us probably have any actual gunnery skill it is a good idea for us to take a targeting array and give us better attacks.