Great posts and thanks for following up on your own questions! Hopefully that will be helpful to others doing the Master Cleanse.
Good for you for doing the liver/gallbladder flushes and the Master Cleanse. I'd agree, do them separately, not concurrently.
As for the tea and salt water flush during the Master Cleanse, I'd say do the salt water flush every day during the Master Cleanse. Chamomile tea is also helpful. Without the salt water flush, the toxins unleashed by the Master Cleanse lemonade will tend to back up in you.
Some instructions and tips for the salt water flush are at