Lightning is a good commander too. I have her with her tier 2 weapon.

I start off most battles with com/syn/syn after a few seconds they all have haste, protect, shell, bravery, faith, vigilence and have the magic applied to them if a monster is weak then switch to com/rav/rav unless they are mechanic then I do med/sab/sab do cast deprotect and deshell, or if they have bad attacks it will be com/rav/med
Are you still on the platforms or are you past that?