I am working towards a team that could solo the heroic rancor raid. The easiest one to obtain for me (that also seems to be the most viable?) would be Vader, Tarkin, Teebo, TFP, Darth Sidious. Is the Zeta on Vader necessary? (I literally cannot put one on him). This team composition (on swgoh.gg) has Jyn instead of Teebo (but Teebo is much easier to obtain). Can I substitute?
Preemptive thanks to anyone who can help me out!
Extra: what gear level would the characters need to be at?