Thanks for the help ... I am working on upgrading Hinata and Sasuke :) but I don't really understand you .. Use basic team 7 for what? I'll use Best Ninjas for other things like Elite Instance / Plot Instance
Definitely upgrade Hinata! You will pretty much never remove her from your team.
This is what I recommend you do.
Team set up
X X X Shizune Fire Main Hinata X Kakashi X
Talent setup
Fire Style Dragon Glame Jutsu Fire Style Flame Jutsu Fire Style Celestial Prison Genjutsu Mirror Return
The most important thing for you to do right now is to get Hinata to 2 stars. She becomes amazing at 2 stars. Of course 3 is better, but 2 is a must. NOTE: This team does not work Until Hinata is at 2 stars. What everyone else recommended is OK until then. But I think this will be superior once she reaches 2 stars. I has good damage and good combos.
Farm for Kabuto and replace Shizune with him. Kabuto is a great healer and his clones absorb a ton of damage.