How high should I take my Phoenix squad?(EP/Thrawn)

I had Ezra at Gear 10, the rest at G8 and my mods are nothing special, the RNG gods smiled on me. Its worth it to take Ezra to at least 10 since he can be useful in other teams. Also save Hera's Backup plan for later in the fight, just have one of your tanks (chopper preferrably) eat Thrawns Fracture then swap the taunt before it expires and you should be able to recover and have BP for later when you really need it.