Try going:
Main x Hinata
Lee Kankuro Puppet
x x x

so that Lee doesn't get murdered before you c*e him again.

Hinata is a solid pick, but try to place her 1 spot up or down and place your main in the middle since he is really tanky. Lee is good in pve but not so good in pvp since if he gets ignited he dies really quick. You can try using karin for a while since you have her 3 star and she is decent for your lvl. Kankuro is strong but you can try making naruto or sasuke 3 star. They are really strong in 3 star. You dont have a lot of ninjas to work with yet but hinata, sasuke (3 star) and naruto (3 star) will stay strong for quite a lot of lvls, so you can keep using them in different situations.

Thanks for advices !