Are all three affordable?
Carnegie Mellon is a totally different environment than the other two. Which environment do you want? Your college experience will be very different at IU/Penn State than it will be at Carnegie Mellon. The kind of location, size of school, size of business program, demographics of the student body, and almost everything else will be different. I would consider which kind of experience you would prefer.
Congratulations on Schreyers. It is one of the most exhaustive honors applications in the country. Very impressive!
What are your current post-grad aspirations?