This kind of excitement and enthusiasm is a wonderful thing to see in a young pup. I see no reason to discourage this. You can gently encourage him to return to a front position rather than running past you. Don't "demand" an immediate change in behavior. Rather, encourage the change to occur gradually with praise and reward. It certainly isn't a problem that warrants any kind of action that would diminish his enthusiasm.
Later, your heel work will advance to the level that you can command him to return to heel rather than run past you. Down the road you will be able to stop him in full flight with a "SIT" command or whistle.
Until you taught and developed the tools to address this, there is no need for concern. Why mess with his drive and enthusiasm?
Junior level hunt tests come after you've achieved good heeling, snappy sits and reliable recalls.
Jim