My drive is similar, but longer (a full mile) and steeper (up and down two steep hills). I like the guttering I see in your pix, and wish I could do that to minimize washing, but most of my hilly drive was cut into the side of a hill and there isn't room for a gutter. I find my blade useful, but also use a rock rake to pull the gravel in because of the rocks and stumps close to the drive. I could bend a blade quickly. I also use a box blade to fill in holes, ruts and the like - and to move gravel uphill. I have to work the road three or four times a year - sometimes more if we have a major flood or the like. The spring work is largely to clean up any mess left by snow plowing - if any.
Thanks for posting. I too find my beautiful location well worth the time I have to spend on the drive. And, for Christmas, I spot collections of solar Christmas lights along the drive. I get them on sales after Christmas. Visitors love seeing lights in the middle of a remote forest.