Food Size
Keep in mind a general rule of thumb when buying mice for your snake -- the mice (pinkies, fuzzies, etc.) should be no bigger than 1 to 1.5 times the diameter of your snake at its widest point.
Also, as a general rule the more mature the mouse, the more nutritious that it is. (e.g., a fuzzy is more nutritious than a pinkie, a hopper is more nutritious than a fuzzy, etc.). So I would opt for a small fuzzie over a large pinkie.
Happy Holidays!