Mr. Texture adds his $.02 worth
I would bake the cakes, cool them thoroughly on racks, place them in airtight containers and/or wrap them, and leave that at room temp until Saturday. Freezing or refrigerating changes the texture in ways I don't like. And for that small amount of time between baking and icing and serving, they will be just fine. I've done this numerous times. Daughter's wedding cake (carrot) was baked 5 days before the wedding and not refrigerated. Never saw a cake consumed by a mad swarm of people so fast. Not a crumb left.
Also, my grandmother, when she was preparing for big holiday meals, needed to bake cakes and get them out of the way because of all the other work for the dinner. She would typically bake the cakes, and ice them, 2-3 days before dinners and store them in a cool room, not the refrigerator. The icing seals the cake and it's just fine. She was eulogized at her funeral by everyone remembering her amazing cakes.