Dashhawk is a great tool, and lots of fun, just take into account the polling data refresh, and the limitations of what it can tell you.
Launching AWD, it all depends on traction and torque curve. With little AWD buggers like the STI/EVO, you have to launch a shade higher so you don't bog off the line, a little wheel spin is fine. With heavier stuff like the Audis and MS6, you can tone it down a shade, as your torque hits lower. Either way, drag launching AWD = lots of strain on the drivetrain. The MS6 is built tons better than the GSX ever was, but beware too many drag launches, as something will inevitably break earlier than you'd like.