I really want to make a 12 layer cake a la the Smith family for my son's birthday, but I want to change the flavors up. Instead of just white cake and chocolate frosting, I really want to do alternating layers of banana custard, peanut butter frosting, and 7-minute frosting, with the final outer frost just basic chocolate butter cream. Am I being ridiculous, or does this sound good to anyone but me? Maybe possibly eliminate the banana? Also, anyone who's attempted this cake and has any helpful tips would forever be amazing.