680 Score (Q42, V41) trying to get into Duke's MiM. Retake?

Hi guys,

This is my first post on the GMAT Forum--but I'm really in a fix and figured, who better to ask?

I took my GMAT yesterday (August 7) and scored a 680 (Q42, V41). I was expecting at least a 700, and got really thrown off in quants. I did take the GMAT a month ago (July 1) and scored a 620 (had some issues at the test center, this wasn't an accurate representation of my mocks' average)--so this is a huge improvement. But, the reality is that I just don't test well. I get nervous at the center even if I take mocks that mimic the actual setting. I think it's just the weight I put on this exam (just the whole "my future depends on this, no biggie" thing) that really hits me hard.

Personally, I don't think I have enough work experience for an MBA so my top choice is Duke's MiM program (mid 80% range: 570-750). I want to apply for their ED this September, so I'm not sure it makes sense to retake this test. To give you a little bit of background about me:

- UCLA '16: 3.62 GPA, BA Sociology (with pre-med)
- 2 years of full-time work ex (over 5 if part time counts): I worked at a VR startup for 4 months after graduating, after which I started my own company. I've been running my own company (it's a travel company for remote professionals that focus' on productivity and wellness) since then I've built it ground up and now have a team working for me, but I can't say it's doing very well--which is what's pushing me to get back to the world of academia

I'd love to hear your opinions. Do you think I should retake the GMAT? Do you think I have a good shot at Duke? Are there any schools you can recommend I look into?

Thank you,
V