Your scores look nice, but when I saw the RC and QR part...I feel bad for you. If you scored 18 on those two sections, I would say your scores are very competitive. Based on your scores (assuming you have at least 3.3 GPA), I think you'll get interviews, but when the AdComs review your file they will not like your RC and QR scores.
So, my suggestion. If you think you can do better than 16 on RC and QR while maintain the other scores, by all means retake the DAT. If you think you cannot, then I would go ahead and apply then try to impress the AdCom with a stellar interview.
Good luck!