@the op, you run off and def based on what your kd needs. The exact mix will be dependent on your kds theme but typically ends up with 15-18 epa if a t/m and anything from 1:1 to 3:2 ratio of leets to dspecs if an attacker....whatever actually off/def will end up based on race/personality but typically falls in that training range.
As for that elf mystic the only way rogues doing AW means anything is if they can turn that AW into stoping ops(fb/ms) or econ on the prov. However given hes built as a A/M, wt, carefull hitting+good builds/kd aid and he should be fine for what he does....early hard MS, late easy ms+econ. Its takes A LOT more than 2 mediocre rogues to AW enough that you can fb down an elf mystic into bad econ.
I personally have run a a/m all age with ~1.5 tpa and havent had any issues, mind u im a feary tact so i get CS.