I am going to return to the original question - @vscollege you wanted chances for Brown or NU ED. As others have already driven home, your reaches (including these two) are reaches for all. So you should assume that your chances are no greater than the overall acceptance rate, and as an international applicant, probably less. Single digits, in most cases.
Of your desired schools NU and Duke provide larger than normal bumps for ED applicants, assuming they are qualified. ED will not balance out a less than stellar record. But if you want to be strategic about using your ED card, these are two options to consider seriously.
Being full pay also works in your favor.
As a parent, I agree with folks up thread - if med school is the end goal, there are excellent Canadian universities where you can obtain a great foundation as an undergraduate. If your family can spend 300K without thinking about it, there is no harm in applying to a bunch of reaches and maybe it pays off. However, I’d advise you to do your due diligence and think about what you really want in a college experience with the goal of paring down that list. Beyond prestige, you want to be challenged and happy and enjoy your campus and the surrounding environment. What does that look like? Urban/rural/small town? Weather? Academically intense or greater work/play balance? Greek life? Sports? Dartmouth and Columbia are going to offer very different experiences, just as an example.
Best of luck to you.