Help with my FF lineup; questions who to start

[Shelton Southpaw]

Can you please give me help with my FF lineup this week? I have questions who to start at RB / WR / Flex position. It is a non PPR league. Listed below is my roster:

STARTERS Wk 11 2011 SEASON WEEK 11
QB Tony Romo, Dal QB @Wsh Sun 1:00
RB Shonn Greene, NYJ RB @Den Thu 8:20
RB Frank Gore, SF RB Q Ari Sun 4:05
RB/WR DeMarco Murray, Dal RB @Wsh Sun 1:00
WR Steve Johnson, Buf WR Q @Mia Sun 1:00
WR Larry Fitzgerald, Ari WR @SF Sun 4:05
TE Antonio Gates, SD TE @Chi Sun 4:15
D/ST Packers D/ST D/ST TB Sun 1:00
K Billy Cundiff, Bal K Cin Sun 1:00

BENCH Wk 11 2011 SEASON WEEK 11
SLOT PLAYER, TEAM POS ACTION OPP STATUS ET
Bench Michael Bush, Oak RB @Min Sun 1:00
Bench Arian Foster, Hou RB ** BYE **
Bench Jimmy Graham, NO TE ** BYE **
Bench Kevin Kolb, Ari QB D @SF Sun 4:05
Bench Ben Tate, Hou RB ** BYE **
Bench James Jones, GB WR TB Sun 1:00
Bench Laurent Robinson, Dal WR @Wsh Sun 1:00

I have questions to who to start at my 2nd WR position - S.Johnson or L.Robinson
I think my best bet is to start 3RBS, one as my Flex.
Which 3 out of the 4 RBs do you think will put up the biggest numbers this weekend in FF? Frank Gore, DeMarco Murray, Shonne Greene, or Michael Bush

Any help or thoughts would be greatly appreciated.

Thank you!