I am sorry about the score. But in all honesty, you have a nice GPA + EC and your DAT is really not as bad as you think. Although a 12 in QR may hurt you a little bit, you did fairly solid in other sections, and pretty darn well in PAT. Just think about it this way: 17 on AA is the average, and 20 on PAT is well above average - its a really nice score. Add that with your GPA and EC and I think you will have a shot.
Just think about it this way, last year there were 10,000+, with around 4,000+ seats. (Well, a little more this year because of midwestern) Thats means as long as you beat 60% of applicants, you are in.
Also, this years DATs average will most likely be lower than last years due to the difficulty. So all in all, it would actually help with your DAT score. Plus, with the nice GPA and EC I think you should be better than those 60%.
Best of luck!