Question(s) about farming gear with a Jedi group

I'm currently farming the purple bacta tanks and am running the mission on auto (saving sims for cantina runs). The mission is super easy and I have nothing to worry about but I'm wondering if I might be able to speed it up a bit. As for normal versions I've only unlocked 6-D LS. I run a full Jedi team consisting of 7Lumi(68), 7JC(66), 5QGJ(66), 5Mace(66) and 5* Ahsoka(60) (could swap in 5Yoda(60) or 5Eeth(60) but their attacks are not leveled as much as everyone else). I get quite a few other Jedi to use as Allies as well.

Would it be better to use QGJ for his speed boost, or Mace for his attack boost? If I have Old Ben as an Ally would it be better for Lumi to be lead so they can stack the evasion bonus for possible turn meter boost?

A different question about Counter now... This mission has you fighting lots of people who throw grenades and give you the Bomb effect. Does receiving the bomb effect trigger the counter?