Lost Charles in a keeper league. Call it a year and beef up?

[riotide]

I'm not going to sit here and think I have a great shot to win this league without Charles. I'm 1-1 after this week, but sitting in the middle of total points for. It's a 1PPR league where we get 4 keepers a year. It's a pretty competitive league. No limits on how many years you can keep a player. Should I try and slim down and grab a top tier RB by trading Greene/Beanie + a WR to a contender? Then I could Keep Charles, 2 WR's, and another top tier RB. I just don't have a lot of faith in this team. Let me know if I'm just being pessimistic or if this is legitimately a good idea to jump on this strategy before people realize they are no longer contenders.

Here's my team:

LINEUP
QB - Josh Freeman (TB)
RB - Jamaal Charles (KC)
RB - Shonn Greene (NYJ)
WR - Greg Jennings (GB)
WR - Vincent Jackson (SD)
WR - Santonio Holmes (NYJ)
RB/WR - Beanie Wells (ARI)
TE - Jimmy Graham (NO)
K - Matt Bryant (ATL)
D/ST - Detroit Defense (DET)
BN - C.J. Spiller (BUF)
BN - Ryan Torain (WAS)
BN - Ricky Williams (MIA)
BN - Sidney Rice (SEA)
BN - Bernard Berrian (MIN)
BN - Steve Smith (PHI)