IMO, zone5figger gave you great advice. These are four cold-hardy, early varieties. .xenil's other suggestions are also hardy but a little later. FWIW, I've kept Florea, RdB, Marseilles Black and Hardy Chicago in-ground (protected) over 2-3 winters here (Z6B) with minimal damage. I planted Malta Black this year, so this winter will be a test; and I'm starting cuttings of Improved Celeste. But its colder where you are, so you may find it tougher.
The good news is that all of these varieties are early enough that if they die back to the ground, you'll probably still get figs. FYI, ALL "common figs" produce the main crop on new wood.
But don't plant DK outside. It's a San Pedro fig that only produces brebas in our part of the world. Brebas are born on old wood. Even if the plant survives, the breba buds probably won't. You could, however, keep DK in a pot that you shelter each winter. That's what I do.