I play as Jecht and my setup has become this:

Champion Belt
Sniper Soul
Smiting Soul
Pearl Necklace
Close to You
Force Begets Courage

With other things changing (generally all boosters), particularly when against opponents I know who play a specific strategy.
Of note, if I get a successful Iai Strike (Smiting Soul) in with Behemoth it's a definite one hit kill.