West gate ground work

Today I decided to do the west gate project. I want to excavate under and around the gate. Then I want to back fill the area with the gravel screening material from the patio. My son, Sam came by and I told him that I had planned this a couple of years ago, long before we even had the fence. I believed that one day we would have a fence and that there would be a gate here on the west side of the house. I had excess screening material on purpose for this project. Even so, I was hesitant to do it, because it felt like I was losing something. I think it was greed. It is strange how the mind works. But I had these plans laid for a long, long time, so I forced myself to follow through.
Even though I know all this well, I still took a survey. Here's the gate, and here's where I'm getting the gravel. By my estimate I have at least two inches of material to take off the top.