I personally use IG lead with ipd, t3, bb8 and GG.
Got ipd zeta'd and this is important to my strat.
My turn order is as follows:
1/ bb8
2/ ipd
3/ ig
4/ t3
5/ gg (with cc triangle, 114hp)
The very important thing that is often neglected is that ig88 MUST have a lot (80% ideally) of CC and the most possible potency. (Mine has 80 something being g11).
Of course, potency must be high on ipd and t3 also, you want those debuffs to stick and specifically target locks.
For the kill order, it depends a lot on who you're facing but against the usual drevan malak marauder/SiT hk dbast, go for a skittering horror on bast first, it should land something like 150k dmg and kill her. When the siths have played, either your bb8 or ig should be dead, go for malak (still with skittering horror) for a 220k dmg shot. Once that's done, clean up with an aoe.
Things get complicated against a GBA g13 with speed higher than malak. Then I suggest you go for him before bastila and hope your gg lands a crit on the next attack (on malak or bastila). Otherwise gba will clean up the debuffs after you kill bastila and you'll get yourself stuck behind the brute. Your aoe won't deal enough dmg to kill malak and gba.
Hope this helps!
