The 19th would be much better on my end. That would allow for a nice race day and then head back north the following day!!! The previous weekend would be hectic. Even if we left when the kids got out of school on the 11th....depending where I was heading......It would be to much of a rush....I wouldn't want to travel 15 hours then jump on a mower....not safe!
Plus this trip would be more of a reason to get this enclosed trailer with sleeping quarters I've been looking at!!!