The duration of the cam will have an effect on the cylinder pressure. Lots of duration and overlap will lower the cylinder pressure so that you can use pump gas. But, it also effects low end throttle response and idle quality. I live in Fl and my builder is in Wisconsin. Telephones and UPS!!
I am new to this board, I don't know who the favorite and not-so favorite builders and vendors are. Perhaps some old-timers will chime in. PM me if you like and I will give you the contact info for the guy I am using.