Your cake is absolutely wonderful! I do feel your pain, though. When I did my first daughter's wedding cake, I made up a dummy for her, after having agonized for weeks over the design, shape, etc. She came to see it and told me that she'd changed her mind, didn't want square tiers, didn't want it to look like her dress, etc. This was after I'd already bought a bunch of square cake pans! What I made (see Cheryl's cake in my pictures) turned out fine, but it took a lot more of my time than originally planned. Luckily, my second daughter was much more laid back, just said she didn't care what it looked like, only wanted fresh fruit decorations.
I'm sure that whatever you end up doing will turn out magnificent
