Just raise the AA two points and you should be fine. Apply, of course, to more then one school. I am interested in why you scored 16 AA? Did you not study? I can not image not studing for this test; I viewed it as the most important test I have ever taken.
Also know that QR is the least valued section of most schools. RC is highly valued as well as all sci sections. PAT may or may not be valued. 16 is an average, so I know that you did score lower then 16 on some sections and higher on others. Some schools state specifically that they will not accept scores below 17 or 16 on any section. Since your GPA rocks, they may let you slide?? I do not know, and I would not take that risk. Just study the whole summer if you need in order to raise your DAT.