Has anyone here done the Swim the Suck 10 miler in Chattanooga? There is something about this race that really appeals to me and has since I learned about it last fall, which is odd because until very recently (as in last Sunday (5/19) - Pensacola 3 Mile Bridge Swim - ~3.3 miles factoring in getting to the finish area, I think) I was essentially a pool swimmer only. I really enjoyed that swim, despite the repeated mouth- and sinus-filling walls of water in my face and extremely limited sighting skills (fortunately, keeping a large bridge on my left was well within my abilities).
At this point, the earliest I could conceivably do the race would be in October 2014, but I'm wondering what sort of open water experience I should get under my belt before making a reasonable decision regarding my competence for this race. It seems to me that since this is a current-aided course it would feel a bit shorter than 10 miles. I would also think that because it's a river swim it would be less choppy than the bay experience was last week. However, it's still considerably longer than the roughly 5k swim I've done.
Advice?