Free Agent Selections Due Tonight

[RenT]

We have a weekly free agent selection process with the order dependent on our current standing. I'm in a 14 team 5x5 roto league and at finished last week in 11th place. Fortunately the team is doing well and I'm moving up a bit this week, but I still have the 4th pick in tonight's free agency. Are any of these free agent pitchers worth dropping Nick Blackburn for?

Doug Davis
Jarrod Washburn
Ross Ohlendorf
Mike Hampton
Chris Perez
Latroy Hawkins
Todd Coffey

Also, a team has a trade offer on the table of his Matt Holliday and Gerald Laird for my Russell Martin and Kerry Wood. My team is struggling in average so I think Holliday would help me there. I am starting 3 C's right now (Victory Martinez, Ramon Hernandez and Russell Martin) between the 2 C spots and 1 Util spot (Nady and Jose Guillen on my bench but both are injured) so I would just swap out Martin for Holliday in the lineup. Only worried about Holliday not having a homerun yet this year, but Martin also is worrying me looking a bit worn down.

Sorry to ask two questions, but thanks in advance if you answer both! And leave a link I'll try to get to yours ASAP.