<p>It sounds like all of the ivies could fit either part or all of what your looking for, however I would say that HYP and Penn would be your best bets. Those schools all have top notch Economics, have extremely broad course offerings, and are not known for a harsh core.<br>
Brown has no core but a weaker economics department.
Columbia has a very solid econ department and is in a great location for business but has a very tough core.
Cornell is not known for their strength in economics as most of the other schools are (however they do have a very good ug business program), and there will be a core curriculum which varies by college, however they offer a rediculous breadth of courses and I am sure that you will be able to study an excellent range of subjects there.</p>
<p>I personally am applying to Penn for their Philosophy, Politics and Economics program. Thanks to their new, more open core curriculum you will have the opportunity to chose the core classes and thus will be able to satisfy some pre-reqs for your major as well as being able to dable in other subjects/form a concentration in another subject as a minor. For example, if I were to be accepted I would enroll in the PPE program with an emphasis on economics while also taking a minor concentration in theoretical physics by taking classes in the College, Wharton and the engineering school (you can only take four courses in total at any of the schools that you are not enrolled in which will count towards your major, but you will have the opportunity to enroll in other classes as electives or for your minor).</p>