Roster suggestions

[hooskins]

I am in a league with defensive players, but I am not going to list them.

QB-Cutler
QB-Rogers
RB-Maroney(i know hes injured)
RB-Addai
WR-B.Edwards
WR-Driver
TE-Gates
WR/RB-M.Barber
K-Folk
D-NYG

Bench-
Garrard
Welker
Ricky Williams
Chambers
Fargas
Quinn(I know crazy pick, if they make a switch week 6 I could have him)
E.Royal
DeSean Jackson

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First of all I realize my team is pretty decent, but I am just having trouble deciding who I should keep in for sure. I thought Welker wouldnt get used much and the would rely on Maroney but that didnt workout. Also Chambers is pretty ify so I didnt put him in. Also royal looked good, maybe I should him or Jackson in for Edwards?

And finally any good RBs that I should look for for pickup? I am thinking I should just put in a WR for the flex spot.