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Re: Another Profile Evaluation PhD in Management Information Systems
As you said, your time is limited.
I think that taking the GMAT again only would make sense if you really expect a big improvement. 700 is good. If you think you can improve to something really outstanding, ok. Otherwise, I don't think you should retake.
If you start a new research now, you probably will not have anything really relevant in just a few months. So, I don'tt think this is going to help that much, you already have a paper.
It seems you are applying to a small number of schools. I don't know the reason for that, and I'm not in MIS to really give much advice about admission possibilities. But with this small number, you will need to get lucky, I guess.
Your research interests also seem so vague that it's not really helpful. "Extracting managerial insights from big, unstructured data" really doesn't tell us much, as there are tons of types of managerial insights. I would work to improve on that, with a good match for an expanded list of universities to apply.