That sounds like a great idea, and I'm near maybe I'll come visit it someday. I would look into web promotion, radio promotion, etc. It's a public event, so you can prob get exposure cheap. Also, check into the local blogs that relate to anything jacksonville.
Next, since you have a website, you should try to get as much traffic to it as possible. Focus your marketing efforts to other websites that have a higher pagerank, alexa traffic rank, inbound link count, and blog reaction than your site. Do the same with the blogs, and it's a winning combination that is a failsafe technique for any startup website.