Melissa Clark at NYT Cooking has a lovely recipe for an apple bourbon bundt cake which calls for a bourbon syrup to be poured over the baked cake. Would this be freezable?
You might want to try the technique ChefJune describes in this thread: https://food52.com/hotline...
As christmas puddings & fruit cakes, which both traditionally have spirits in them, can be frozen, I'm guessing your bourbon-soaked cake will also be freezable.
Since alcohol minimizes ice crystal formation, the addition will actually help the cake through the freezing process. Cakes freeze so beautifully anyway, so go for it!