Pick shark, flowing whip, water enchancement and water clone. Summon can be any, because its not rly important.

Main---Haku---Clone
Guy--------------------
Tenten----------------

Guy isnt very good in this comp, much better someone like suigetsu who can do double water attack each round, but at least he can buff a bit whole team. You c*so use someone like sakura. Damage ll be lower, but higher survivability if you need that. Also make sure water barrier indeed buffs team, because i heard 2 stars chars can be bugged.