<p>alero86,</p>
<p>Good times. However, keep in mind that top graduate programs in the US tend to be interested in focused, highly motivated individuals with a good reason for pursuing graduate study. Unfortunately, I suspect that even if your desire to pursue the development of an economic model is a good thing, most programs aren't going to really see that as "enough" for admission.</p>
<p>However, since you sound motivated and hard working, I think you'll probably get into some programs. Any specifics at all on what you want to study?</p>