A simplified version of Dracula? Sure. Take it out of its epistolary setting and put it into 3rd person? Why not!
But at least stick to the story? There are multiple points when this book deviates from the original, for example, the entire character of Quincey P. Morris is missing. Dracula loses a few of his abilities and best lines. Arthur Holmwood's name is also misspelled during the entire book?