You are lucky that one of your safeties, UIUC, is also a T-50 in your field. However, as you probably know, they suck at financial aid, even for residents.
However, you should look at Wisconsin and UMN, bot have top programs in economics, and both have better merit funding than UIUC.
Northeastern and Boston University also have scholarships for National Merit Finalists, as does Tulane.
University of Southern California also has some merit money.