Roster suggestions

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.

Who's available?

Depending on the point system, it's never wise to start a WR over a RB in the Flex position, unless you happen to have Randy Moss, Reggie Wayne and Larry Fitzgerald.

As far as RBs are concerned, you could always make a trade, using Braylon Edwards as bait, but Edwards will get his numbers (last 2 years: 141 catches, 2173 yds, 22 TDs).

Those worth picking up would be Chris Johnson TEN, Sammy Morris NWE, Chris Perry CIN, Darren Sproles SDG, Michael Bush OAK (depending on how long Fargas is out), Ray Rice or LaRon McClain BAL (if McGahee continues to be hurt)