i think your plan sounds workable, actually very workable. it's exactly what i'm planning to do for the next 20 days!
i definitely want to stick to liquids only but i'm going to incorporate chicken broth and veggie broth (possibly diluted v8 juice at times) depending on my energy levels. i need to keep up with a moderate exercise plan so i want to maintain my energy. i also will have coffee or possibly a diet soda every 1-2 days.
i know we can do this! if you want to keep in touch, let me know. we can email each other or something?