I think if you want to graduate debt free, the most important decision is the initial on of where to attend college. If you can’t afford it without loans for the first year, you won’t be able to do it for future years.
There are ways to reduce the overall costs of going to college by traveling home less often, taking the lowest meal plan, living in a cheaper housing situation, getting books from the library or very cheaply off the internet. Some people reduce housing by being an RA, by getting a ‘room and board included’ position (at a church, at a sorority or frat house, by living with elderly people needing help), reduce food costs by working at a restaurant.
But the hardest cost to reduce is tuition, and that’s why it’s important to pick wisely at the beginning. Is ‘UofM’ (Michigan?) your best choice for a low tuition?