"So far the only thing you need to edit is one file from what I have read, if you run a 3.8 forum"
More than happy to answer any questions about CloudFlare. You do want to make that change if you want original visitor IP returned to you & this is actually kind of important because all visitors would like our IPs without making that change to VB (which can impact a variety of things, including the ability to block by IP).
Some helpful tips:
CloudFlare and forums
Tips for new users