As far as arenas go, the biggest problem is they'll probably be faster than you, so unfortunately you dont have too much to deal with agk except maybe use fire main with sealing jutsu

Anyway, for 6p naruto, one way to deal with it in arena is to just make it so he doesnt have the chance to mystery turn 2, which is where shizuka comes in. Her Knockdown to repulse chase increases mystery cd by 1, so if you get it off on 6p naruto, he doesnt get to mystery and you get to do your stuff cus most 6p teams just use some variant of earth main + 7bee and whatever suits their tastes for the last one [shisui for barrier, edo itachi for like 10 thousand support things etc.] and earth main and 7b wont contribute to turn 2 mystery stuff.
Hopefully to ensure it hits 6p for the chase, is kushinas job with her mystery after she gets hit enough, since shizukas standard rams a random line and is inconsistent, so pray she doesnt cause repulse. Along with that wind main uses harem jutsu to more often than not pop his dodge so you can start chases on him. Flower guard just cus 2/3 girls will get the flower buff [wind main + one more] for shield and is the overall safer choice. or just use wind buff if you want the damage but since everyones wind someones not gunna get it.

Uhh, 6p naruto if you want to have an overall all rounder good pos1, edo itachi for the literal do it all support, if you can afford it you can go for earth grudge kakuzu and break through him.

I'm a little short on time right now so i cant go in depth for 3 lineups for ranked battle