Yes, agreed that the OP ECs are impressive. I just don’t share your view that her chances for admission/merit are “great” at USC or any school that has a 9% acceptance rate and 2% merit rate. Also, the most represented states for the Class of 2027 at USC are California, NY, Texas and Illinois so I don’t think OP being from Illinois will help her chances either.
But we can agree to disagree as I am far from an expert on USC admissions. I’m just a mom who spent many hours on USC’s threads last year and where my daughter will be attending.
I hope OP adds more targets to her list and applies to whatever reaches make the most sense both academically and financially.