Diva Birthday Cake

About a month ago, I agreed to make a diva-esque cake for a friend's birthday. The cake I plan to make is based on a design done by Pink Cake Box.

The Inspiration

The Revised (well, sort of - tier sizes revised)

As you can see, the inspiration cake is a four tier, topsy-turvy cake. I plan to do the first three layers only, but instead of putting my friends age on top, I will make a "bedazzled" monogram cake topper. The party is Saturday, December 26, so I've got about two weeks to get everything together. Not only that, I live on the east coast and the party is in Chicago! I have sooo much stuff to lug on the plane with me! I plan to make homemade marshmallow fondant, the stars, and the monogram in advance. I have access to a KitchenAid stand mixer and a well equipped kitchen in Chicago, so I think I can pull it off. I'm also going to make a practice cake in advance because I've never made a topsy-turvy cake before! Wish me luck, because I need it!