2nd Base Help

[jeremygordon]

12 Team League 5x5
Our league only has a 2B and a SS position, no MI, so I got to a certain point in the draft and figured no one would pick up a backup MI.
End result, I'm stuck with Clint Barmes and the only replacements seem to be Kelly Johnson and Alberto Callaspo. Even players like Sean Rodriquez, Casey McGehee, Maicer Izturis, Scott Sizemore, and Plácido Polanco are gone. So do I wait it out and see who gets dropped once a few players add 2B eligibility? or do I need to start hitting the trade market? If a trade, how much do people think Sizemore or Beckham are worth as upgrades? Also Beckham was complaining of a sore shoulder, anything to worry about?

C Matt Wieters (Bal - C)
1B Justin Morneau (Min - 1B)
2B Clint Barmes (Col - 2B,SS)
3B Evan Longoria (TB - 3B)
SS Alcides Escobar (Mil - SS)
OF Matt Holliday (StL - OF)
OF Justin Upton (Ari - OF)
OF B.J. Upton (TB - OF)
Util Derrek Lee (ChC - 1B)
Util Jay Bruce (Cin - OF)
BN Chipper Jones (Atl - 3B)

Pos Pitchers
SP Josh Beckett (Bos - SP)
SP Scott Baker (Min - SP)
RP José Valverde (Det - RP)
RP Chad Qualls (Ari - RP)
P Brett Anderson (Oak - SP)
P Jason Frasor (Tor - RP)
P Ryan Madson (Phi - RP)
P Chris Pérez (Cle - RP)
BN Edwin Jackson (Ari - SP)
BN Clay Buchholz (Bos - SP)
BN David Price (TB - SP)
BN Matt Lindstrom (Hou - RP)