Keep in mind that a phys only build will get mutilated in the final dungeon. I strongly recommend you get an AOE Magical skill and latch onto it(preferably ones like Glacial Blast and Bolt Storm which inflict status as well).
In DDS1/2, STR is king(nom nom nom hunt skills). DevSur1, magic. DevSur2, either/or, but phys is so good w/ assassinate.
In SJ, well... depends on how your char turns out. Mine turned out an AGI build. Preempting bosses saved my life many times.