Regarding the approach of reducing body roll by raising the roll-center: That may work, but the tradeoff is the wheels won't "tuck-in" under the body as much when the suspension compresses. That can cause the tires to grab against the edges of the wheelwell cutouts unless you run narrower-offset wheels, and the tradeoff for *that* is an increased likelihood of traction-rolling due to a narrower track-width.
Sometimes you just gotta use a swaybar.