Paying for college questions

My situation: I'm going to go off to college this fall, to the tune of about $22,000 per year. My parents can contribute $15,000 per year. I have a scholarship for $1,500 for each of the first two years. That leaves about $5,500 for me to get in loans for the first two years, and $7,000 a year for the last two. So I'm looking at accumulating about $25,000 (US) in student debt over the next four years - yay?

My question: How will I pay this off AND go to graduate school afterwards (I'll be paying for all of that)? Tips on paying off loans in general?