Offense sets and primaries on GMY. You want his offense in the 6k range if you can get it there. Speed is important, but not as important as offense (6e offense square / triangle / cross with offense % secondaries on your arrow and wherever else you can get them - the secondaries bump up quite a bit once you 6e the mod).
Since his main competition is other Revans and Traya, critical hits are either hard to come by (Traya leadership, GK crit immunity, Jolee in general) or have consequences you don't want (trigger a taunt, potentially on a tank with retribution who gains more protection for counter attacking than the damage he takes).
It's ok to sacrifice some offense for speed. Speaking of speed, the rest of your toons are awfully slow for top end arena. Check out the mods on some of the teams in your top 50. You have to kiss a lot of frogs to find a prince in there, there's no shortcut, but it must be done.