Asked: Fantasy football question too much depth?

Do i have too much depth at rb?
who's the odd man out and try and trade for a better wr

QB Aaron rodgers Big ben
RB Arian foster lesean mccoy adrian peterson alfred morris mike turner
WR Demaryius colston greg jennings stevie johnson
TE Vernon
K matt bryant
DE Arizona

Asked: What fantasy player should i keep?

Hello everyone, I'm in a 14 team fantasy football (IDP) 5 keeper league.
Here are my keepers

Jake Cutler CHI (QB)
Gregg Jennings GB (WR)
Lesean McCoy PHI (RB)
Brandon Pettigrew DET (TE)

I don't know who to make my fifth keeper? Here are my options.

Julius Peppers CHI (DL)
James Laurianaitis STL (LB)
Lions DET (DST)

Who should i make my fifth keeper from these three players.I'm kinda leaning on going with Lions DST since there are only 32 DST to choose from and the Lions are ranked in the top 10. please help me make my decision a bit easier. Thanks