Up Grades on Stroker-Suggestions

Sounds like I'm up for headers and exhaust, I will look into TTI or Doug's
Edddies OTB have a max lift of 575, if I get the heads ported and do a cam change should I stay with mech cam or go the roller route, yes I know it's personal choice, I don't mind mech cams & I have never run a roller cam.
Thanks