Strongly encourage you to research the schools your son is interested in at these sites (below) to understand the specific cost of a school and how to interpret all the financial data that could potentially come your way. Also, encourage you to call the Financial Aid office to answer specific questions about the school and your situation. If your son is offered an athletic and/or academic scholarship, the school will generate a financial package for him. If you have already done your homework, you'll understand what to expect, and be able to ask the right questions for your families financial situation rather than fly by the seat of your pants like I did with oldest son. Keep in mind, there are all kinds of financial aid models these schools use, so that is why I'm suggesting getting ahead of the curve.
http://nces.ed.gov/collegenavigator/
http://collegecost.ed.gov/netpricecenter.aspx
http://collegecost.ed.gov/catc/Default.aspx
Good luck, and remember it is your money. Most of the financial aid folks we dealt with were very helpful, but somewhat overwhelmed with requests. Keep the coaches updated on your financial aid progress and they can grease the skids when needed. That was our experience.