Gibbs and Pittman for Chase?

I have QB: Stroud, Fields, WR: AJB, DJM, Nico RB: Bijan, Chuba, Demercado

Bench that is trade worthy: Tank Dell

My thinking is: both Chuba and Demercado (at least according to the blurb reports) are going to be the first string RBs now, and the loss of Gibbs isn't going to be too bad because of the shared touches with Montgomery. Should I add Dell to the pot to make it sweeter, or would this be fairish?