Would a FA pickup help this roster out?

[the dresden]

10 team H2H league, currently in 1st but always looking for ways to improve.

Here is my current offensive lineup:
STARTERS
C - Soto
1B - Morneau
2B - Utley
SS - H. Ramirez
3B - Blalock
OF - Markakis, Ethier, Werth
IF - Dunn
Util - Ortiz
BENCH
2B/SS - Aviles
1B/3B/OF - Teahen

Would you take Shin-Soo Choo over either of these bench players (or even over a current OF)? How about Ian Stewart (provided he gets to play full time)?

These are the two best options available at the time. Someone picked up Aaron Hill yesterday, otherwise I'd have thrown him on the list.

[MaudDib]

I would drop Aviles and grab Choo. Teahan can give you some nice protection should one of the three spots get hurt.