U c*e wind main with this team but i pref fire main,i managed to defeat ppl with 20k more power than me with this team:
fire main - sage naruto - x
hashi - iruka - x
x - x - x
Talents 4,4,2,2,1
Summon: Serpent

PS. It works better for me when fire main clone is in front of naruto,and sage's clone in front of iruka,cuz fire main clone is doing a huge job when he attacks opponents ninja.

hmm ok but i don't have Iruka yet :p
And instead of it?

U c*e killer b then,and use his mystery Yo on hashirama so he can immobile enemies in 1st round.

If you're still trying to make this team good, aim to get Iruka!

But i think, you c*so use killerbee (i have both). i really like the first turn freeze of hashirama and killerbee c*so buff the main damage dealer naruto-em. the only thing you are missing is the interruption and the buff for fire main and hashirama

There is interruption, only it occurs during hashirama's chase.

There are so many ways to use hashirama and sage. Because of his passive healing whenever you get chakra, you c*e him as a sustain tank, it's especially nasty and annoying to play against if you pair him with water main (chakra absorb) or any other ninja with that passive- snake kabuto, jigokudo, danzo. Personally my most used team is mei, sage, hashi and fire main (44221 dog of hell). Most of the time his barrier isnt win condition, it's more of an interrupt bait. You can substitute mei with pretty much any ninja, either support or damage dealer (when the other ninja is a dps, your main fulfills the support role), that ninja doesnt have to be konoha if he provides enough value to be good on his own (see: mei).

Hashi can fulfill several roles: buffer, sustain tank, cc machine (paired with bee or after 2nd skillbook), barrier breaker. See which of those roles could help you the most during everyday play and build accordingly.