ROS Help: Mariota/Keenum and Doctson/Coleman

I am making a playoff push and am in pretty good shape except at QB. I have Marcus Mariota and have switched between him and streaming all season. It’s worked so far but I want to have a backup. Bottom-line, is Case Keenum worth picking up? He has a worse playoff schedule, but Minnesota’s offense is playing much stronger than the Titans.

Picking him up means I would have to drop either Corey Coleman or Josh Doctson. I think Doctson has the better QB but Coleman is the clear go to for the Browns (for now). Standard scoring league. Thanks footclan!