Fantasy Football Keeper Question - Specifically 2nd Tier RBs

[jericho]

Friends,

I have the 9th year of my keeper league tomorrow and need some help regarding my first round pick. 12 teams, Snake style. I have the 4th overall pick. Starting lineup consists of:

1 QB
2 RB
3 WR
1 TE
1 Def

I'm keeping Foster (in the 4th) & Cobb (in the 9th). Jimmy Graham & Gronk are kept so top tier TEs are off the table. I have the 4th overall pick and if Calvin Johnson falls to me I will take him. A.J. Green is kept, but Dez, Julio, Larry Fitz, B-Marsh are not. Dude picking 1st overall said he's taking Adrian Peterson so he's off the board. Here are my best case scenarios for RB's still available at my #4 pick in the 1st round:

-Trent Richardson
-Steven Jackson
-Chris Johnson
-Frank Gore
-Matt Forte
-Maurice Jones-Drew
-David Wilson

Trent Richardson is my #1 if he makes it to me, CJ2k is my backup assuming that Calvin Johnson/Trent Richardson go in some combo for the second & third picks. Who would you take in my scenario? Is a WR worth considering? We have to start 3 WRs but I'm confident I can get a solid one for my second pick when the Snake comes back (someone like V-Jax, Andre Johnson, Victor Cruz, etc.).

Help me COLI!

 

[jericho]

QB is out of the question - only 4 pts per TD pass and the only noteworthy ones being kept are RGIII, Cam and Luck. I can likely get Matt Ryan / Romo / etc. in the 5th, 6th or beyond.