Good for you! And congratulations on doing the cleanse. It is well worth it to do the Liver Flush with the epsom etc. and the ingredients are very easy to get. You can get the ES from the supermarket or drug store and they are very inexpensive.
Definitely pick a day where you can recouperate the next day. I have started doing my flushes Friday night (since you don't need to start until 6 pm) so I can have the first half of Saturday to recover and then still have Sunday to do stuff.
Also, doing this right after your cleanse could make the Liver Flush even more successful!
I've given you a link below to the Hulda liver flush. Just follow those instructions. It does say to egt ornithine, but it is hard to find and you don't need it for a successful flush so i wouldnt worry about finding it.