First note, at VERY least, cut the center doughnut from the rear bumpstops. You will thank me if you have yet to do so

improves ride tremendously
I don't remember any of the details of the alignment anymore really. You seem to know more about it than I do as I never attempted ot figure out the thrust angle stuff. My alignment is fine and my tire *seem* to be wearing ok.
Just FYI I keep my AGXs set at 2 front 4 rear all the time