Alright, so I'm a Master's student in a top-15 graduate program, and I am
Prof. Smith gave a detailed and honest answer to which I don't really have anything to add. But two things about your question struck me. First, your GRE scores seem to combine two different scales: the current scale on which Analytical Writing is scored out of 6 and the old scale on which Verbal and Math (Quantitative) were scored out of 800. Nowadays, Verbal and Quantitative are scored out of 170. Did you take the GRE on different occasions separated by some years? In any case, an Analytical Writing score of 6 is 99th percentile, as is a Verbal score of 780. Those scores should impress anyone who sees them. Second, I'm struck by your having published a book on philosophy and skepticism before even entering a doctoral program. I'd be surprised if any of your competitors have done that. If the book is good and the publisher is reputable, you'll certainly stand out from the crowd. My only concern in that case would be whether you think you still have much to learn about (say) skepticism from a doctoral program after having already published a book on it. If you have time to email me the title and publisher of your book (my email address is on my homepage, linked to at right), I'd be interested in knowing more about it. In any case, best wishes.