You can get Kurenai, Tenten and Hinata. if you don't have them you can go for Baki, Tamari and Kunkuro. She will buff all the wind ninjas so.. You c*so check my guide in my signature, it is more concentrated for pvp

Depends... for Arena I am using:

BAKI GAARA X
MAIN X NARUTO 9 TAILS
X X X

Using Impetus, Gust Dance, Shoot Down Rasengan, Enhancement Wind and Multi Clone Jutsu (When I get it)... Basically this team and passives will buff naruto to the max until the point he start one shotting people with his passive "Rage" that gives him +Attack every time he gets attacked beside all the buffs from gaara and wind main and he also apply a ignite debuff which help on dps... Bakis will reduce resistance of the enemy which help on damage and also his ability is really strong it cause High Float so gaara goes in and smash the person. Always start with Gaara's skill and use his other skill which is an AoE to get rid of clones or as a finisher.

make sure to enhance equipments and magatama and also refine everything.