Playing for Championship.. need advice!

[southernstyle]

Need some confirmation on my starting lineup for my championship matchup if you will..

This is a PPR league with quarterbacks getting a point for completions as well.
We have IDPs as well, but I wont get into that.
Let me know if I have made any errors with my starters. Any input would be appreciated.
I'm a little worried about the Rivers/Matthews combo totally tanking and ruining my year, so should I go with big Ben? maybe bench Matthews? bleh..

Starting lineup.
QB. Phil Rivers (does he have anything to play for?)
WR Joe Webb (point per completion.. no brainer)
WR Pierre Garcon (my opponent has P. Manning)
WR Mike Williams (TB)
RB Chris Johnson
RB Ryan Matthews
TE Tony G.

Bench.
QB Big Ben
WR Anquan Boldin
WR Brandon marshall
RB Ryan Torrain
RB Peyton Hillis
RB Ced Benson
TE Jimmy Graham