We went for 2 days in June 2012. Do you already have your tickets? We got 2 days for 1 price tickets from reservebranson.com.
As far as a touring plan, I don't think one is really necessary. Read the descriptions of the rides to see what you want to make sure you hit, but you should be able to ride everything no problem. The Tom Sawyer raft ride is fun if you like to get really wet.
Maybe study the map. I was pretty useless in navigating the place, but I'm not the best at that. I found it very hard to get orientated there.