Don't waste your zetas.
Your toons are way too low gear, and need that more than a zeta.
My best guess would be Zeb and Kanan to at least G8 - and Ezra to G10 for more survivability and damage.
Make sure you have good mods as well, and you'll have a much higher chance at succes.
You need to speed Zeb and Ezra up to around 200, and getting mods with sufficiently high speed secondaries is no small task.
(A zeta will help you exactly zero if your entire team is made of glass and hit like wet noodles).