EFC should be viewed as the minimum you will be paying. IIRC, the UNC-CH also uses the CSS Profile as part of their financial application process. That being the case, your net cost really is determined by the financial data on the Profile, which is much more detailed than the FAFSA data.
I think only YOUR family can determine if $40,000 in total debt is something you want to have. It would be $27,000 in Direct Loans that would be your daughter’s and $13,000 that would be yours.
Keep in mind, costs will likely increase over the four years.
The Direct Loan amounts currently are:
Freshman $5500
Sophomore $6500
Junior $7500
Senior $7500.
So are you saying that she needs an additional $5000 in loans all four years? Can some of this be made up with money earned from her working?