I think that you should listen to your body, and make a decision from there. If you think for immediate health purposes, that it is better t ostop now then maybe that's a good idea. That doesn't mean that you can't start eating healthier now, and then in a few months venture on another Master-Cleanse and tough it out for even longer.
Otherwise, if you think yo ucan tough it out then go for it man. You've gotten this far, and maybe once these toxins truly start passing thorugh your body you will start eeling better. It's your call, but you definately will have something to feel good about if you make it to day 10. Be easy,