So, If you want to be a good savior boy and help prisoners for food and play as honest (not taking pat deal).. Yeah, you will end up with K4. I dont have problem with this, Because I'm the fan of Evil Dom path. So, my choices for my canon path are totally selfish and badass. But, I dont clearly understand these prison choices of a Selfish Kane taking good dom choices out of prison.
I mean, yes, he may think that.. "Well, I'm a good boy. But first, I will do anything I can to get out of this shithole prison and be a good boy out of prison". But, this is all headcanon for players. Kane doesn't given any coherency in game script.