RB and WR Help for Playoffs. WHIR!

[kn29393]

Start 1QB, 2RB, 3WR, 1TE, 1D, 1PK (PPR)
Roster:
QB's:
Cutler
Cassel
Stafford
RB's:
MJD
J. Charles
Ivory
F. Jackson
WR's:
Calvin
Knox
S. Smith (NYG)
M. Williams (SEA)
Crabtree
Bess
TE's:
Gates

I've started MJD and Charles all year, but this week I'm thinking of starting Ivory over Charles because of the matchup - Charles @ SD, Ivory - home against STL. What do you think?
Also, I need to decide on my other 2 WR's. Calvin is a lock, and right now I have Knox (home for NE) and Crabtree (home for SEA). Crabtree has just been so worthless all season and Knox has not been spectacular. Should I sub Bess (@NYJ) for either?

Thanks! WHIR!!

[eso112]

I'd start Jackson over Ivory or Charles.

Knox is your best bet for WR.

viewtopic.php?f=19&t=487745