Many years ago my father talked very favourably of the business program at Irvine. To me these three schools make more sense compared to at least some of the other UCs.
It would not surprise me at all if you end up with 5 acceptances to the top schools in Canada, all of which are very good.
It sounds pretty certain that you will end up with a very good university to attend in September, although predicting where would be tough. It would not surprise me if you do get into Cornell, but rejection does seem to be significantly more likely than acceptance just because the overall acceptance rate is so low. The fact that you know quite a bit about Cornell and about the program that you are applying to might help your chances.
Best wishes.