1) Meh.
2) Combustion/Missile weaponry is good against Star Wars tech. Star Wars shields do sweet fa against combustion/missiles.

I want to see a sheet again obviously. Though to be honest right now we have ground forces en-masse. With 10,000 Wraith drones and the UNSC vessel we could quite happily take on a small planetary body and IIRC you modified that ship slightly to not be overly large. I personally would like canon ships. 

If it is canon throw up a sheet with all the other usual stuff and the intro scene. Due to the current nature of things everyone would need to edit their posts who have incorporated your ship. You'll need to either have both or find a way to get rid off it if your other ship is acceptable.