If you apply for a Parent PLUS loan
and get denied, your child becomes eligible for a higher Stafford Loan
limit. To take advantage of this, you should contact the school's financial aid office. The Parent PLUS loan credit check is not as thorough as a private loan check, so a bankruptcy in 2002 may not have a negative impact as long as his credit since then is good.
If the additional Stafford loans are still not enough to cover the cost, private student loans
can be a good options for those students with a cosigner. In this case, it would be beneficial to find a cosigner other than you (or your husband if he also gets denied the PLUS) but maybe an aunt/uncle or grandparent with good credit would be willing to help. Keep in mind that a cosigner can be released after a certain number of on time payments to the loan, so they're not obligated to repay on the loan.
Good luck, I hope this information helps!