I leveled as fire for the most part and I was able to do a lot of damage :D

x Naruto x
Sakura Fire Main x
x Sasuke x

Naruto summons clones in right most column (if you have 3 star Naruto you'll have clones take all the dmg)

My talents were basically the same as yours except my Chase was Phoenix Fire. When you hit lvl 53 try to get Summon Chameleon and I believe that would give you a 6 or 7 chase.

Don't worry about Line-Ups too much until about 70+ By then you should have a bigger pool of ninjas.