Ideally, they'll go with Atchison, Reyes, Aceves. Atchison earned his place on the team last year, and I'm more than comfortable letting him be a 5th/6th inning guy. Aceves has looked too good to keep at AAA, and Reyes is by far the best lefty of the group-- plus if they don't take him now, they lose him.
Albers has a 5.11 ERA in the majors. Rich Hill is around 4.8. Wakefield should be on his way to the glue factory. Okajima has shown nothing to deserve a spot, let him get his s*** together before calling him up.