Thoughts on Kelley?

I am a future freshman of IU this upcoming fall. I originally thought I was going to go down a pre-med track, but I’ve been having second thoughts because I could see myself in the business world too. If I were to switch my major from Biology to some type of business degree (most likely business administration), I would be a direct admit into Kelley because of my GPA and test scores. With that said, how enjoyable would you say Kelley has been? How are the professors? How hard is it to get a good GPA (3.5+)? Any insight is very much appreciated. Thank you.