1. Admin can create tourneys (always)
2. Clan leaders can create tourneys (always)
3. ACP option for users to create tourneys (radio buttons to toggle yes/no)
No offense to you bro but you don't seem like a real gamer. A real gamer would know that if users could create tournys it would be like mass hell with a new tourny every day and no one would play. Only Admins should be able to create them. Maybe invitational tournys would be cool so after the ladder play you could have a tourny for all the top teams.
You may want to post an update so you don't lose what you've worked on in the past few days.