Some current Emory students have recommended T.H.E loans (Total Higher Education). They are a non-profit I believe.http://www.northstar.org/
One of their differentiators is that they don't capitalize your interest until you actually enter repayment status. This could save you some money because many other lenders capitalize the interest on your loan monthly, quarterly, or yearly throughout the time you're in school, so the interest builds upon itself.
For the credit card issue, I don't think maxing out your CC will have any effect on your ability to get a Stafford or Grad PLUS loan....your approval for those is based on Federal standards (which are pretty minimal...I mean, they approve 18 year olds who don't have any credit history) and not credit score. So as long as you aren't missing payments or in default, I think you should be fine. Perhaps you can pay off the card when your student loans are disbursed this summer....student loan interest is tax deductible, consumer debt interest is not. Best of luck!