Can this cake be made day before, then frosted?
In general, it's a good idea to bake a cake a day before you plan to ice and serve it. Wrap the completely cooled layers in plastic, and store at room temperature. So, my vote is yes!
P.S. Before such distinctions were recently banished, I used to be a Trusted Source on Bread/Baking. I'd so love for your cake to succeed.