This really is the crux of the matter. These schools are not alike. The vibe is different, the students are different, the curricula are different.
One of these schools must appeal to you more OP, no? Start with the core curriculum at Chicago. Does that appeal to you?
Chicago still is an academic pressure cooker (because of the core, quarter calendar, competitiveness of students)…some students love that, some don’t. Even if you can handle it (and they accepted you so you can), is that what you want for the next four years?