I'd drop the 2x Lotus Blossom for 2 more Vampire Hexmage. I feel the Blossom might be too slow for the format, and really unless you're going the Living Wish route, there really isn't any reason not to run a full 4x Vampire Hexmage. Well unless you don't own a full playset yet.
Other than that, the list looks good. Crop Rotation and Fauna Shaman adds a good level of tutoring for the combo pieces.