When looking towards the future your best bet is trying to get a 4 star SOSP naruto. He is currently dominating in China and undoubtedly perform really well here once he arrives. Other options you could consider are; 4 star edo minato, 4 star kimono shisui and 4 star Kakuzu earth grudge fear. These ninjas are strong enough to function as your primary damage dealer, and then you select 2 other ninjas that provide support for them.