I would go with the Zerker,mystic,dirge trio - I think both your dps output and survivability would be higher. Zerker dps ~ SK dps, but if you dualwield with zerker in low levels your dps should be higher than an SK's, mystic dps > defiler dps (though defiler has better powermanagement), dirge dps ~ trouby dps, but I think you'll have a little extra survivability with the dirge (especially once you get stoneskin lvl 52).