If I had to do another SAS (Im planning on another once I graduate), I'd lower it some (around 4-6" total lift), change the angle and mounting location for the upper mount of the coilover/airshocks, put the axle side coilover/airshock mounts an inch wider on each side, ditch the doubler, make a different trans crossmember with a slot for the front driveshaft, triangulated 4 link instead of parallel, ditch the cradle. In an ideal world, I would sas a 3.5 next time. A bigger motor couldn't hurt either..
Overall I think it was fine considering it sat around 26" of lift. Less lift would solve so many of the headaches.
I never experienced any death wobble or shaking luckily.