Number 1, check the flow numbers on your heads. Single pattern cams are passe` nowadays. Number 2, when you widen the lobe separation angle, you will lose torque below 3500 and about 5% overall on average. Cam companies routinely sell wide LSA's as a compromise for street manners. 236 degrees is about where you want to be. Have you looked into a stroker crank or is it too late?