Help !I have 4 startable RBs but don't know who to start

I have Damien Williams, Spencer Ware, CJ Anderson, Jamal Williams, and Marlon Mack.
My current starting running backs are CJ Anderson and Jamal Williams, then my flex will be whoever gets the start for Kansas City, I like the matchup against the Raiders this week. I want to Start mack but I feel like his Ceiling isn’t as high as the other backs this week against a tough match in the Titans.

I think you are set as you are without Mack. KC just paid Williams to be there next year for sure so chances are they want get a good look this week and in the post season before they decide what to do with Ware/draft/FA.

I’d roll Williams, CJ and Jamal