I Use Zabuza 3 Stars, Naruto, Sakura 2 Stars. and my main character.
my team level are 39, my line up its, Sakura in the first Square of the third line, Zabuza in the first square of the second line, naruto in the second square of the second line, and my main character was in the third square of the third line, this was a good line up to attack and protecy the team!

http://forum.naruto.oasgames.com/en/forum.php?mod=image&aid=729&size=300x300&key=ee777990ac2b76ff&nocache=yes&type=fixnone