What's the best way to practice for an upcoming tourney...

By Boundary, in X-Wing

..If my only playing partner doesn't have his wave 4 ships yet?

I'm assuming that there will be tried and true favorites there, not just new stuff. Out of all these ships below, what would you recommened for builds that we should be practicing with.

My Opponent (Rebels):

3x X-Wing

1x Y-Wing

1x B-Wing

1x A-Wing

1x YT-1300

Me (Imperials):

4x Bombers

2x Firespray-31

2x Lambda

2x Defenders

5x TIE Fighters

2x Phantoms

3x Interceptors (2 Imp. Aces)