Tuning for ram air

Hey guys! I'm putting a custom hood scoop on my car soon so iv been reading up on tuning the carb for it and here's what I understand at the moment. Should richen it out a bit (like 6%) for the denser air and to make sure that the top of the carb sits at least three inches below the scoop to prevent air from siphoning fuel as it passes over the carb.

Anyone got something to add, correct or have experience with this?