How would you handle this GW team?

Got it! It was surprisingly easy after a few false starts, an RNG quirk, and some luck on my side.

I started with my droids and had real bad luck, so I retreated and put my mish-mash in and only did a little bit better, so I retreated again and switched back to droids and tried something different. I single-targeted Baze until B2's turn and used his AoE cleanse. It missed Baze, crit against Biggs, and failed to Buff Immunity Han, so they murdered me pretty badly as a result and I retreated.

Now, it's a little-known quirk that autobattle has a separate RNG seed. So on the next try I single-targeted again and then, once B2 came up, I auto-battled and got a lucky break--hit Baze, didn't crit Biggs, and Buff Immunity on Han. Then I burnt down Wedge, using AoE only when Biggs' TM was close enough to full that it wouldn't matter. I was able to burn down Baze next, then get Anakin down to about 3/4 health before my droid team was defeated.

The mis-mash team was able to clean up just fine.

Baze is a real game-changer. I wish I had bothered to get him!