i use main-guy-kakashi-hinata line up before. but when i got my tobi, i replace guy with him.
Main-Tobi-X
Sasuke-Hinata-X
X-X-X
This is the formation i'm using now. If you have flood dragon summon, you may use this line up as it gives you at most 10 combos. But if you do not have it, you may replace sasuke for kakashi with white snake summon.