WR's
Randy Moss
Desean Jackson
Austin Collie ( if he plays)
Brandon Lloyd
RB's
Chris Johnson
Peyton Hillis
Ryan Matthews
Thomas Jones
WR's I tihnk you go with Moss, as I think Minnesota will try to get Favre's 500th to be caught by their new toy. Next I'd probably go with Collie if he plays, if not I think Lloyd or Jackson are probably about even. Denver's lack of a run game hurts Lloyds chances as the Ravens can just pin their ears back and go after Orton. Kolb's lack of ability to read defenses makes DeSean Jackson a tough play since Kolb tends to check down.
RB's are easier and I think your flex comes from here. Honestly you could play CJ2K and any combo of the other 3, but I would probably go with Hillis, he ran for over 100yrds against the Ravens afterall. I think Mathews gets the start over Tolbert, and I think Mathews takes back all his goalline carries. Tom Jones is also an interesting play, but the RBBC in KC would worry me. I think Charles will have a bigger day then Jones, but I think Jones may get more carries.