Aggressive Negotiations Tier 5 Helppppp

So you can probably get it done with a combination of what you have there, my guess would be Dooku, AV, Sun Fac, soldier, poggle. I know I originally unlocked with basically AV solo (she was like g12+5, double zeta, and it took far too many tries to get rng right).

However, my advice would be to farm Geo Brood Alpha. Under his lead, the geos are a formidable early game team that can decide GAC battles, and he makes the Padme event trivial (its weird, because you would expect all the extra attacks to make it hard, but it doesn't really).