I hate to be Debbie Downer, but every college student should read this chart and understand what's going on in it. First, yes, the cost of text books is outrageous. That's why I do not make them mandatory (you're welcome). When possible, buy used books, share them or find an outlet (Amazon?) that will allow you to get the best deal.
Secondly, and more importantly, check out the delta between College Tuition and Wages. Tuition is growing much faster than wages, meaning the ability to work your way through college is getting harder and harder every year. While it's great that internships are abundant in Construction Management, your internship should not take precedence over graduating as quickly as you can.
Thirdly, I know it's relatively easy to get student loans, but don't stupidly use that debt to buy a car or consumer electronics if you can absolutely help it. You would be using debt, which comes with interest you will have to pay, to purchase something that is getting less expensive over time. Wait to buy it with the wages you get from your high-paying full-time post-graduation Project Engineer salary.
I teach people who will be building our country's infrastructure.