I have 2 Sartanas, one up to 70 on level 3, the other a work in progress. I think she’s great and fast.
I think you go Kash for tank and I think I’d still lean Li for a flank.
I would do Sonya and Tiburtus
Boldtusk/Kellile Sonya Kashhrek Li Tiburtus
What raid category are you in?