Advice for my team? 12 Team PPR

[threepeat]

Hey everyone. I'm 2-2 in my league (though have the most points scored)... just had 2 unlucky matchups. What do you guys think of my team? What can I improve?


QB: Philip Rivers
WR: Wes Welker
WR: Stevie Johnson
WR: Nate Washington
RB: LeSean McCoy
RB: Ryan Matthews
TE: Dustin Keller
K: Neil Rackers
Def: SF 49er's

B: Ben Tate
B: Denarious Moore
B: Kyle Orton
B: Stephen Ridley
B: Jacoby Ford
B: Preston Parker

Top FA:
-Josh Freeman
-Kevin Kolb
-Rex Grossman
-Michael Bush
-Johnny Knox (just dropped)
-Michael Jenkins
-Earl Deucet
-Earnest Graham


Any advice would be appreciated!