First, my son is an IU freshman this year and he loves it there. He is a Kelley DA, and given his experiences thus far, we are very happy with the decision he made to go IU. HOWEVER, he will only have about $20K of debt when he graduates which we think is not unreasonable. There is absolutely no way he would have chosen IU if it meant the kind of debt you are talking about.
Second, boysx3 made a valid point regarding admission to Kelley. My son is a very strong student and has found the coursework challenging. Generally speaking, a 3.0 gpa is not a sure thing. When S was looking for schools, he eliminated any that didn't offer direct admission into their business school. You need to think about what you would do if, in fact, you weren't admitted to Kelley. How would you feel about the money that you had already invested there?
Finally, several years ago, when my D was searching for schools, we found this web calculator very useful It not only calculates what the monthly payment will be but also the annual salary that you need to be making to be able to make the monthly payments.
FinAid | Calculators | Loan Calculator
She was sure she HAD to go to NYU, but when we punched in the $100K she would have to take out in loans, the starting salary was ridiculous. It was a valuable reality check for her and we never heard another word about NYU.
Using the calculator, $65K, 10 year term, 6.8% = $780 monthly payment. The more important number though is that you need a starting salary of over $89,000 to afford that monthly payment. If you think about this realistically, you'll know that very few students will have that kind of starting salary.
I admire your vision of your future and your enthusiasm. Most kids your age have not given their careers a whole lot of thought, which you obviously have. However, those of us with a little more age and experience under our belts don't want to see you dig yourself into an impossible situation. Even if you were able to obtain that $89K job, it is still a huge debt load that will keep you from taking advantage of other possibilities.
Good luck with your decision.