you went from spec miata to a wrx? I went just the other way from a STi to a spec miata.
I would try to find some bigger sway bars if you're getting a lot of roll. something in the ball park of 24/24 or 27/24.
for alignment specs I ran ~-3 in the front, -1.5 in the back, max caster, with a touch of toe in in the rear, and a touch out in the front.