I would suggest that you definitely retake the test. Looking at your post I can observe that things have gone wrong on the timing front. Hence practice on the timing the answers. Time discipline comes by practice. Since you have Manhattan books, you should have access to the online tests. Manhattan quant is more difficult than the actual GMAT and you can learn the art of making calculated guessing. It will also teach you when to skip trying to answer questions but make random guesses.
I am confident that with little work on timing and revision of all the concepts, you should be able to hit the score you are looking for.
Wish you good luck.
I am confident that with little work on timing and revision of all the concepts, you should be able to hit the score you are looking for.
Wish you good luck.
