Trade Advice: Tate for Lacy or Morris?

Want another RB b/c Ill be making the playoffs for sure and need some solid RB play. Guy in my league wants Tate straight up for Lacy and doesn't have anything else I would want. Another guy has Morris and OBJ and Im thinking about offering him tate and either Bell or gore for the pair. Ill be thin at WR but Brown and Thomas can hold it down. Advice?

My team:
Rivers, Palmer
J. Charles, J. Hill, D. Robinson, J. Bell (Bush back), Gore (played subpar), Jennings (still out), C. Sims
Antonio Brown, D. Thomas, G. Tate, Decker
Delanie Walker,
Lions D, Dan bailey
Standard league