Which RB to drop DST

Which RB would you drop for DST. Full PPR. D. Singletary, L. Murray, or Duke Johnson

I’d look for another option to drop before any of those guys.

But if it has to be one of them I’ll take the better offenses & drop Singletary.

This is the rest of my line up.
L. Jackson
J. Goff
David Johnson
N. Chubb
J. Jacobs
T. Coleman
J. Edelman
S. Diggs
M. Andrew
R. Anderson
R. Woods
I Have a lot of RB. So I am unsure if I want to drop a WR

If I had too, I would drop Murray.