It's a fun premise, just make sure you work hard on it and proof read like Mizal said. Also, keep in mind that there need to be multiple branches and endings to give the reader a choice. You will have to write this story at least twice because of that. The guide I mentioned will be helpful for the type of story you are making because you need to make your story work well as a stand-alone.
I have confidence in your ability to appease all of us Disney fans around here. You should check out that thread if you haven't. Welcome to the site!