Hey mate,
Wiggs (Biggs & Wedge)
& Chaze (Chirrut & Baze)
Are both good. Wiggs is a bit dated now, but under a CLS lead still hits hard and you've already got them at 7 star. Chirrut you've already got 5* so you're just missing Baze. Both are a long farm, but with the Grand Arena when you get to 85 you'll never be like darn I can't believe I geared up Chaze and Wiggs. (also in 3 man Grand Arena, I can see the Pairs (Wiggs, Chaze, Han & Chewie etc) will become even more important.
Don't have a clue about geonosians, my worry would be they arn't used for any events, they don't make up a raid team (awaiting corrections?) I would farm Bounty Hunters for the ships as atleast the pilots then get you Chewie. (/are also super useful in events, for the two bounties to get Nest, Wampa etc, not to mention Rebel Roundup etc etc.)
