16 team PPR league... what to do at RB

QB: Newton
RB: R Frreman, A Collins, J Williams, A Jones, S Michel, K Johnson

WR: A Hopkins, K Allen, M Goodwin, M Godwin, A Calloway

TE: T Burton

Start 1QB, 2RB, 2 WR, 1 Flex

Went WR as I picked later 1st RD and banked on Freeman and Collins to be decent and drafted RBs with some potential for later. Started 0-1 and losing tonight by 14 with the team having Marshall and me having Burton, Chi D and Chi K. So not confident I pull this one out. This league doesn’t trade much, so dealing for a RB is hard… that said what would be some targets that I may have to over pay to get at RB that you’d do? Assuming I’d have to come off Allen and then some to find a RB that would be a solid start. I like the potential of Michel and Johnson… but fear being out of the playoffs banking on what I have to make them matter.