What is your budget?
What state are you from?
What are your safeties?
Ivy’s and Chicago are reaches. Your chances at an Ivy might be slightly better if you could explain which one or two are the best fit for you, and why.
I would not call Chicago “lower-level than Ivy’s”. It might be ranked lower than Harvard overall, but if you were to rank all 8 Ivy League schools plus Chicago I think that Chicago would be in the middle of a very elite set of schools.