Customize after effects 3d animation -- 2

Hi everyone, i need to do the following urgently asap. I bought this after effects audio react visualizer: [login to view URL] and would like to add/customize the following things: 1. Option to Add or change the model,character to different girls/models etc from [login to view URL] for example 2. Have option to add more dance moves/steps 3. Option to Add background image or video If you can get what i want done by today, i'll add another bonus.