I just downloaded Easy Worship for my church. I am not super knowledgeable in the media filed. I really liked the Basic version of Easy Worship, but i would like to switch to the Premium one. I tried to look through the FAQ, but i didn't see anything on there. If i just purchased the Basic version should i just wait and upgrade next month? or is it possible to upgrade now? would i be charged the difference or would it count as a separate payment for upgrading after just downloading the basic version?