Wow applying early, interviewing early too. It's not even August yet.
I thought I did poorly in the interview, but I'm glad I got in!...Dr. Johnson actually came to our school to interview. I would just advise you to be ready on the normal things you would usually talk about during interview, but it'd be good to be also up-to-date up current events....He did ask some questions that were harder to answer...that deals more with your character/personality/habits/characteristics/viewpoint....I suspect those questions are more for seeing how you act under pressure. For the most part, that's what I remember from my interview last year. Good luck.