I can tell you that every tuition bill I have ever paid is “more” than I would like to pay. Colleges are completely unmoved by what you or your parents think you can afford.
You have clearly set your cap for Duke- and who knows, the financial powers that be may smile on you. For your sake, I hope that is true- and true in subsequent years.
But in our family, hope is not a strategy.
Also, if one of the Collegekids said to me “I’ve fallen in love with every aspect of the school” I would make them go back, take off their rose colored fantasy glasses and come back with some negative things about the place (person/job/etc) that they would care about irl. Because there is simply no such thing as a perfect college (or house or job or partner): there are always trade-offs, and the hard job is to figure out which ones are truly dealbreakers and which ones you can find ways to live with.