I'm going to purchase media composer 8.0 and upgrade from 3.0. I do not have a machine that meets the specs for Media Composer 8.0 but will buy one in the next 6 months. Will I have to have Media Composer 3.0 installed on my new computer to upgrade to Media Composer 8.0 or can I install media composer 8.0 without having 3.0 installed?