I'd be hoping Prior, Pedro, Manny, Maggs, then Nomar were available.
Since A-Rod, Pujols, Soraino, Helton, Vlad, Beltran will be gone, Bonds might be that would give you at least one of those players. If you get 2, you are off to a good start.
Since Bonds is old, I'd pass on him if you think the keeper league will be around awhile. Most don't last 3 years. I'd throw Delgado in over him. I'd pass on Halladay since you don't really want to buy high on SP. Pedro and Prior are worth the early pick. Halladay is no better than a SP you can get in round 3 or 4.
I owned Halladay last year, but I got him in like the 5th or 6th round. I passed on my personal favorites of Zito and Oswalt in the 2nd last year, both disappointed. Either could put up better numbers than Halladay and should easily be available to you in round 3-4. Grab Prior or Pedro if you can, other wise wait until round 3-4 for SP. Even if you do grab Prior or Pedro, consider a SP in round 3 or 4 as well. Don't draft RP too early. Let someone else take Gagne in the 1st or 2nd round. I usually don't even think about RP until like round 7, but I want proven guys. I'd be happy with Izzy, Percival, Hoffman...any of those types.
* Steroid induced record