Vacationing the week before, otherwise, I'd strongly consider it.
I don't think the $600 is bad, not when the flying alternative is a $300ish SWA flight, 8 additional hours of driving, and the 3 day cost of a rental car. And even then, your Friday timing is redeye tight, so a Thurs night trip out and hotel cost may be in the cards.
now there is the economical 9 hour road trip option, but sandwiching 3 days of nonstop golf and alcohol between 18 hours in the car isn't at the top of my list. Plus, with the timing, you're looking at an overnight hotel on the way out and being in sad shape for that 3pm Sunday drive home. By that point, I might be willing to pay someone $600 to give up their return flight seat to me and drive my car home for me.