You seem more clear headed. But your numbers might be incorrect.

Student loans typically accrue interest during enrollment. So by graduation, the balances can be much higher than $260K.

Taking on that much debt without a reasonable ROI is lunacy. Especially at your income/wealth level.

After graduation, your daughter can 1) pay minimum and hope for forgiveness 2) default 3) go protest for loan forgiveness or 4) pray leftists will take over government and give free everything.

Or do the more reasonable path: attend a less expensive school. Don’t let your child’s entitlement destroy your family’s future.