10-team 2-man-Keeper - Standard Scoring - Any Feedback?

[MetalMario]

Hey, guys.

I'm in a ten-team keeper league. Two keepers are taken as manager's first two picks and then fifteen rounds follow. Pretty much standard scoring, though the defense is scored a little higher (fifteen to negative ten points based on points allowed + sacks, fumbles, etc). The Flex is (Q/W/R/T). I'd love any and all feedback, and I'd love to help in return. Thanks.

QB: Phillip Rivers
WR: Brandon Marshall (Keeper)
WR: Mike Wallace
WR: Demaryius Thomas
RB: Jamaal Charles
RB: Marshawn Lynch (Keeper)
TE: Antonio Gates
Flex (Q/W/R/T): Robert Griffin III
K: Dan Bailey
DEF: Eagles

BN: Stevie Johnson
BN: Peyton Hillis
BN: Donald Brown
BN: C.J. Spiller
BN: Sydney Rice
BN: Ryan Williams
BN: Ryan Tannehill