Moot court is extremely dependent on having judges who know what they're doing. I'm afraid most people will have a very skewed idea of it if you try to use community/parent judges. It's not about passionate persuasion--it's about a careful consideration of technical legal issues.
This. Its success will probably be entirely dependent on who they get to judge. If they are willing to invest the time and resources to get lawyers, federal judges, law students and law professors then it will probably be a great event.