bring anko for her barrier

fire main + iruka + anko + shurado is the typical nine tails team for the fire class,
but you can sub other ninjas in if you don't have them yet, such as tobi will synergize well with anko's barrier and your main's fire enhancement passive, gai sensei would be good for taijutsu buffs, if you dont have these, other ninjas with a damage causing mystery + standard attack (preferably of the fire class) would be fine

don't worry too much about combos because you cannot cause any status to kyuubi
also when you get to lvl 50, bring tonton as your summoning pet, it has bonuses for bosses, and summoned enemies