Clear your current plot instances to get Kimimaro and then work on upgrading him.
Clear some of your level 50 elite instances to get Guy.
Upgrade that sasuke to 3 stars.
Long term goal is to work on getting enough points to buy Jugo from the shop. The team to aim for would be Main, Sasuke (3stars), Kimimaro and Jugo - but Guy will be an ok filler until you get Jugo.

In the mean time...your ninjas aren't upgraded that well. Try to get that Hinata to 3 stars. She's a good stop-gap until you have something better to fill her spot, but at two stars her chases end the combo. I recommend Kakashi over a two star sasuke. You don't have Kabuto so go with Sakura if you need a healer - or Sasuke if you don't.

You should really work towards getting Kimi and Guy though, those should be your main priority.