Carson And Montgomery/Singletary for Adams?

0.5PPR 3WR 2RB 1 flex. I have stacked RBs and poor WRs:
-Fournette, Carson, Jacobs, Singletary, and Montgomery
-Julio, Stills, R Anderson, Fitz, and Josh Reynolds
Was offered adams for Carson and Singletary. Trying to decide if this is too steep and pivot to another WR (e.g. Kupp or Godwin with this trade or try and trade just one RB for someone like K Allen
Thoughts?

Also trying to decide between keeping Singletary or montgomery ROS as my flex…thoughts?