MSU honors college chance of success?

I have been admitted to Michigan State University Honors College with the ACT score of 30 and an unweighted GPA of 3.89 (Ranked 12 of 330ish), and I am in Lymann Briggs. What are my chances of doing well in the Honors College. I am really worried that I will be unsuccessful. Please tell me what you think. Also do you think UMich will give me more opportunities in the long run. I am also thinking of a Biology/Pre-Med major