If you don't have ground vanilla bean use a splash of vanilla extract (about 1/4 tsp)
I have used both culinary coconut milk (canned) and drinkable coconut milk (the refrigerated kind in a milk carton). Culinary coconut milk definitely increases the caloric and fat content of the smoothie but oh man it is delicious! Sometimes I use half culinary and half drinkable. Play around to see what you like. Nutrition analysis is using drinkable.