I don't know about the coffee (I'm obsessed with teas), but I would suggest having master cleanser in the morning instead if you want better IF benefits... When you're fasting, you should only drink liquids. It doesn't matter what you put in your liquids, as long as they dissolve. I use my Magic Bullet to achieve this, usually, or I mix it in the master cleanser.
If your D3 is in a gel form (liquids are more easily absorbed, tablets have bad absorption rates), you can just empty it into your shake/drink in the morning. That way, your GI tract doesn't have to work to digest anything (just absorbs) and the cleansing continues!
The master cleanser is intended to get your good ol', healthy digestive juices moving for some good old fashioned cleansing, the way our ancestors did it. Word is, once they realized how good they felt when they were starving, they started doing it during times of food abundance, full-aware of the benefits of this type of cleanse, which is made possible by the digestive juices doing their thing and letting the GI tract take a break, while the body catches up on its homework. The lemon and cayenne pepper stimulate stomach acid production. I personally don't use the maple syrup.