Start Sit help needed

Need to start standard 2RB, 2WR, and a flex

RBs are Dalvin Cook, David Johnson, and Chris Carson
WRs are Amari Cooper, Tyler Lockett, and Brandin Cooks

My initial thoughts were to sit Cooks and go…
RB: Cook and Johnson
WRs: Cooper and Lockett
FLEX: Carson

Thoughts?