Bottom line, it's really up to you to retake it or not, since there's always a risk of doing worse on your next DAT. However, I applied 2 years ago with almost identical stats and didn't even get an interview, and other sections of my application were honestly solid. So, from my own experience I'd say yeah retake it, but then again it's a decision you need to make. You can always hope for the best and expect the worst but I don't think that a wise idea.