trade advice. kelvin benjamin for darren sproles

I would give up benjamin and receive sproles.

standard non ppr league

I currently have at WR
Calvin
Andre
Maclin
Terrence Williams
justin hunter
Kelvin Benjamin

RB's include
Montee
Alfred
Ryan Matthews
McFadden
Taliofero

My only issue with making this trade is that I have Maclin and Foles. So I would essentially be starting a RB, WR, and QB from the same team every week.

ETA: also, about a week before the draft I noticed Kelvin on the FA list so I grabbed him. So I basically would be getting sproles for free