Match intake to heads?

IMHO, if your head ports are slightly bigger than your intake ports, you probably won't see any real difference. I personally would worry over it only if I was full racing or if the step was large.

In times past, some slight step down from intake to head ports has been advocated as a way to reduce reversion into the carb. I have no idea how well this ever worked.....and your cam is not all that wild.