damn a QR of 16 is not bad but a 16 RC and PA might be something to worry about. If i were you i'd still apply this cycle. you have a really good gpa so thats a huge plus. worst comes to worst you spend more time studying and ace the dat next time. you'd def get in next years cycle then
You might need to re-strategize. A retake is almost inevitable. Apply for this cycle nonetheless i.e. if you can afford it. But do consider retaking the test and with a very solid reading plan this time around.