Saturday is a few days away.....so why not get what you need and try to incubate them?
I incubated my eggs in moistened vermiculite, in a plastic food container....both available at any Walmart, or Home Depot or local hardware store, probably even in most food stores.
The vermiculite should be very moist, soak it and then drain out all excess free water.
There are, of course, other ways to incubate the eggs. If you do decide to dig up the eggs and artificially incubate them, make sure you don't rotate them. The top side must stay the top side.
The eggs will take a couple months to hatch, but hatching is dependent on temperature etc. There is a lot of online information on breeding and hatching and raising young boxies. Read read read and then ask questions. Tess has a good online book. In the future you should also be able to tell when your female is gravid. She may even double clutch this year.
Are your turtles outside or inside? Diet? Set-up? Florida boxies are always in demand. Since you hav captives, breed them and get the young circulated around.