RB2 and Flex Help

Hi Guys! I traded McCaffery & Michael Thomas for AA Rod and JJ Nelson, but now I’m having a hard time figuring out who I’ll start as an RB2 Week 3 (I have Doug Martin coming in ((hot)) week 5). I have Gillislee, Samaje P, Jonathon Stewart, and the questionable Terrance West. Any insight? Thanks!

As far as a flex option, I have all of the above, Alshon Jefferey and Diggs.