Need team advice

[Fishercat]

First of all, here is my team (all players listed at their primary position, first is the starter, * is util)
C- Posada
1B - Ortiz
2B - Roberts, Polanco
SS - Ellis, Vizquel
3B - Cantu, Zimmerman
OF - Dunn, Drew, Guillen, Wilkerson*
SP - Martinez, Prior, Beckett, Hudson, Harang, Sosa
RP - Cordero, Cordero, Orvella

Now, a few questions.

Weeks, Crosby, and Castillo (Luis) are all on the waiver wire. I want to go after Weeks, but that would give me another 2B...and unless I drop Polanco, I'm just adding to a depth position while taking away from a lacking one.

Fuentes or Orvella for third closer?

I have a trade on the table, Halladay and Schmidt for Pedro Martinez. I'm tempted to go for it, drop from 2nd to 4th (IMO) best pitcher available and take a risk with Jason, to see if he can return to his old self. He has several OF that could be an upgrade to my team, but outside of that, his resources are limited. Advice?

[DirtyKash]

I would definitely do Halladay + Schmidt for Pedro. Go for it.

[Witlon]

Even at half of what he was Schmidt is just as good of a risk as Sosa.

Personally, I like Weeks a tad better than Polonco for his 5 catagory ability(shoud hit .280, 15, 65 RBI, 75 R, 25 SB) compared to Polonco's normal .310, 90 R line.

[Fishercat]

It's kind of funny considering the crap that he offered before (Harden and Lowe for Martinez, and Carlos Lee with Schmidt/Lowe/Other Mediocre Pitcher for Pedro and Ortiz).

Seriously considering the Halladay trade, any other opinions?

[Dry1313]

Do the Halladay trade, keep Polanco, def. Fuentes as 3rd closer.

[Kingdom]

Offer Pedro and Drew for Halladay, Schmidt, and some useful guy.