I actually think you're OK except for your RB2 situation as you mentioned could be better. I agree with the other guy - I would start Tolbert as your RB2. I'm not a big Ryan Matthews fan.
You've got Freeman to cover for you until Manning is back which hopefully will be not too long. And I like your WR corps.
I feel your pain because I'm in a 14 team league - hard to be solid at every position with that many teams.
Help with mine please. viewtopic.php?f=44&t=495035
0.5 PPR 14-team league. All TDs are 6.
QB - Vick, Tannehill
RB - CJ2K, TRich, Pierre Thomas, Redman, lamar miller
WR - S Smith (CAR), Demaryius, Hartline, TY Hilton, Hixon
TE - Witten, Chandler