Schools like young achievers. From the high-level information that you've shared, your profile looks strong.
But a lot would depend on the specifics that go into your essays.
For instance, the fact that you launched your business at 19 doesn't provide us with anything to judge whether it was a success/failure.
- Did it give you a chance to build and demonstrate fantastic leadership skills?
- Did you sell off the business for several million dollars?
- Irrespective of whether it was a success or a failure, what did you learn from the process?
- What gaps do you see in your current profile?
Are you targeting Sept 2010? Either ways, a higher score will only help you strengthen your profile. So if you have the bandwidth to do so, go ahead and re-take the GMAT.
Sameer Kamat | Founder - MBA Crystal Ball | Email: info at mbacrystalball dot com