Biggs is going to die quickly as always and then you only have two ships left. Its not a bad list but I can see it losing to being outshot.
Bigs has 4 defense dice to roll until he takes his first hit, 5 dice at range 3. Unless he rolls badly, 2 attack dice from Imperials aren't going to touch him for several turns, even with a lot of shots from multiple ships. Even 3-dice Firespray and Interceptors will have a little bit of trouble, especially if you can keep him at range 3 from most of them. Meanwhile, the Falcon will be dealing damage.
My 2-dice A-wings couldn't hit the 4-dice Soontir Fel very well in the finals.
That said, though, I'd consider a more offensive-oriented Falcon to maximize the damage caused until Biggs gives before he gets hit/dies.
I think the challenge will be maneuvering two large ships in the 3'x3' table, while also avoiding asteroids and other ships. You'll want them two close enough to help support each other, but far enough apart that they'll be able to maneuver without hitting each other.