What team without Grievous should I farm and gear to unlock 7 star Padme in 1-2 months (next return)

So it appears that GG is out of the question for me since I'm not willing to spend shard store shards. Nobody had really answered that question btw (Rath Tar answered it before it was properly worded). It's apparent now that fleet store isn't realistic. As I said, I'm only interested in getting Padme the next time she shows up.

So without GG, I'm unsure who will be lead. I know I'll have Ventress (that's Asajj) and B2. I'll probably get Sun Fac. I'm unsure about the last 2. Droideka and Nute maybe.