Full disclosure: I'm WL'd at Minn and Duke, and am also interested in Macro.
If I were in your schoes, Minnesota > Duke >UCLA. Duke is weak in macro, unless you can get advisors at Fuqua, which I've heard isn't easy to do. Minnesota is not the powerhouse it used to be, but is still top 10 for macro. If you have a location preference UCLA is obviously superior and Cal stipends are supposed to go up substantially soon, and the university as a whole has had a dramatic rise over the past 5 years.
Edit: Just saw you have to pay tuition at UCLA. Try negotiating with them using UMinn offer as leverage, but if they don't meet it scratch them off your list.