Hemp Protein?
Give us stats of the chocolate. Chances are it would not fit into my plan. Wait till maintenance! I kept all snacks and treats out of the house while losing as I could not control myself around them. Now I keep one item only at a time and I ration myself. It may sound harsh but it works for me and I never feel deprived.
I would look for something in the 20-25 Protein range for that kind of caloric intake. You will never get in enough protein and stay in the 600-800 range taking in 8 grams for 120 calories. Muscle milk is not bad and I use it for my protein coffee since it is so sweet. I use the GNC brand lean muscle mix for regular shakes. 200 calories for 25 protein. Still a bit high but I like it and if you do not then you will not drink it, right!