Post-Sidious Arena farming

Ring

So I'm getting my Sid to 7* after the next Arena refresh and, like so many others before me, I'm clueless as to which way I should go next. My current A-Team is:
Phasma (L) - lvl 60, 4* (5* tmrw)
GeoSol - lvl 60, 5*
Sid - lvl 59, 6* (7* tmrw)
Lumi - lvl 60, 7*
JC - lvl 60, 4* (coming up on 5*)

I have a bunch of other characters who are levelled up but not on my main team (like Old Daka, 5*, lvl 59 ), but I think the direction I would like to go is Rey-farming, for which I need Dark Side 5D Hard IIRC, so having a stron Dark Side team is important. Right now my DS team is:
Phasma
Sid
Old Daka
GeoSol
Talia (lvl 59 4*)
That's not really good enough to go 3* on a Stage 5 Hard mission. So my guess is I should either go IG-88 or HK-47. The problem with both is that they are fairly squishy, so getting 3*s in those missions might be a problem. So maybe Savage Opress or Asajj? Help?

podian

If you need DS, Asajj is very good. But if you can get a LS, then Han Solo.