Who would you rather play at Rb?

I currently have Lindsey and McCaffrey I am worried about McCaffrey’s production due to cam and the past couple of weeks performances. Would you replace him with either M.mack who is injured or K.Johnson? Standard league.

Lindsey all day long. I’m actually gonna flex him I’ve OBJ this week

Sorry what I was saying is should I replace McCaffrey with one of the other two options.