Who to drop or just dumb idea all togeather?

I'm in a large AL only Roto league and in third place but currently have no chance of catching the first place team due to their strong start in both pitching and batting. My OF is very weak and since there is not a single active player available to pick up that would help me out in any way I'm considering the following:

Activate Wells (on DL till at least end up June) and drop one of my current OF to make room on my bench so I can pick up Francisco Liriano. Then proceed to wait a little for him to be activated then trade him off for a stronger OF. So I guess first off, is this a completely wack idea or good move, and if so just who should I drop?

Batting:

C-Buck

C-Posada

1b-Guillen

2b-Pedoria

3b-Longoria

ss-Lugo

of-Balenetien

of-Bynum

of-DeJesus

of-Ibanez

of-Stairs

u-Aybar

u-Lowell

Pitching:

Beckett

Lester

Rasner

Sabathia

E. Santana

Colon

Soria

Street

Borowski

On bench: V. Wells and Matt Garza