Kage lvl = Ultimate Class or Minor God
Super Kage = Maou Class or Major God
Six Path = Top 10 or High Gods ( this is Naruto and Sasuke before he came to Dxd )
Sasuke strength increase during the these 2 years at Dxd so his strength should be at Top 5 Heavenly Dragon Class
I have no clue should I bring Sakura to this world due to her medical experience. Let me know. Just note Sasuke harem is max five or six people. Might even be less, too much is difficult to write all them together
Author since sasuke would be almost immortal. Will he control his clan properly now? I mean imagine an later descendant of uchiha who has yokai bloodline and joins devils. Such a person would be a dangerous factor. So will he discipline them properly to prevent past from happening?