Well, It depends on lots of stuff. Do you have good extra-currics? any additional leadership? What about community service? If you have all of above then that makes you a preeeetty darn good candidate, if your lacking all three, the going will be tough.
As for the GMAT, depends if you want to apply this year or next. If you want to apply now, I dont know that its such a great idea to retake the GMAT. Cause although you may be able to get a 760, (and I'm sure you can) surprises DO happen and you might end up spending all the time you need to work on your applications on your GMAT, only to get a less good score. (Believe me, I've seen this happen LOTS!)
If you will wait till next year anyway, take your time and go for the 760. It will help.
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