That sounds like an excellent juice fast! Just be sure to keep drinking water too; nothing acts on the body the way that water does. :) he makes a lot of good points.
If you want a simpler fast, you can try the Master Cleanse, but that won't get rid of mucus etc. as much. It will simply rest your cells and flush your kidneys. the detox value of the Master-Cleanse is actually rather negligible, much as everyone swears by it. :)