I'm dealing with exactly same issue. But i already have zBad and zzHK. For now i'm battling with Dr Bad HK Sion Nihil. Helped me get from 80 to 33 in arena yeasterday and today i sit on same possition (that is rare for me i had to try hard everyday to stay under 100 with jkr).
But I'm lost in mods.. tried to go offense and speed for revan but yoda just instakill him so now i have full health set with speed cd prot prot primaries. I let revan go first and give fear to everyone, then i play with possibilities :D
I'd be also pleased if somebody with obviously bigger brain matter could enlighten us :)