These lists will help you confirm some of your current choices and will give you ideas for further research. At least a few of these schools will match your other criteria, including reasonable prospects for admissibility. The positive aspect of your current 1970 SAT score is that it indicates you are qualified to do the work at almost all US colleges.
Top Economics Programs, Based on Faculty Publishing
At Undergraduate Focused Colleges
Williams
Wellesley
Middlebury
Hamilton
Claremont McKenna
Colgate
Vassar
Holy Cross
Richmond
Lafayette
Bates
Macalaster
Bowdoin
US Naval Academy (included for accuracy)
Trinity (CT)
At Universities
Harvard
MIT
UC-Berkeley
Princeton
Chicago
Stanford
Columbia
NYU
Yale
Brown
Michigan
Boston U
Penn
Northwestern
UC-San Diego
(Lists represent the top 15 institutions in their categories from Ideas. See the original source, available online, for an explanation of the limitations of the analysis.)
In terms of excellent economics programs generally, I would add Cornell, Brandeis and Duke.