Honestly, I say screw the back-end of the rotation. This playoff rotation will be just as good as any in the game, besides Philly and maybe Tampa/Oakland/Brewers/Angels. Look at what the Yankees have done with a pile of filler. Pick up Beltran, and the Sox have the best lineup in the majors, by a significant margin.
Millwood, Tazawa, Doubront, Aceves, Wakefield, Lackey, Weiland, Miller. There has to be something in that mess that will give some kind of production as #4/#5 pitching.