When I want to do a small practice fight just the keep my skills up I use the ships and cards from the core sets.

Old Core Set: Luke Skywalker with R2-D2 and Proton Torpedoes Vs. Mualer Mithel with Marksmanship and Dark Curse (36 pts.)

New Core Set: Poe Dameron with BB-8 and Proton Torpedoes Vs. Omega Ace with Wired and Zeta Squadron Pilot (37 pts.)