Time for some updates...
I spent all last week building the lower level of the wall. It did not start well. I thought a mini excavator with a thumb would be the tool of choice for this, so I rented one. The problem was that you could not lower the bucket with a rock in it much or it would just slip out. Plus the Ex was not as big as I was expecting. After trying it a bit over the first weekend (dropped of Fri), I decided to send it back Mon, and got the biggest Bobcat I could find. Now THAT was the right tool for the job. These rocks were varying degrees of huge. The smaller ones are at least 1000 lbs, and I would say most were 1500-1800 lbs, but the ones on the lower level were likely in the 2-3k lb range. Using my forks, I was able to place rocks pretty well overall. The stone is local (quarried only a few miles from the site) and is a pretty common limestone for the area.
Here is how it was delivered:
A friend and I spent the weekend laying out all the rocks so I could access them and see what they all looked like - Important for choosing the right rock for each spot. Then we leveled and prepped the base with filter fabric and some of the 2" crushed rock (no pics of that). After that I was on my own the entire week. So here is the field all laid out (using the tractor and the Excavator).
Come Monday I got the S300 bobcat (~85 hp) and took a shot of the 3 units before they picked up the Ex.
I was concerned that this was not going to go well and I would run out of time after 1 week with little done. It turned out OK. After Mon (Day 1 of setting rocks in the wall) I was almost done with the base layer. And I lost half the morning with getting the bobcat delivered. Here is end of Day 1.
That 3rd rock from the bottom was the ba77 buster. It was the one rock that was actually heavier than the SS could really lift. I was able to get it just slightly off the ground and then half drag it in place. The SS was rated for 3000 lbs lift, so this was probably ~double that (?). Probably way heavier than my forks were rated for too. There were plenty of other big ones, but that one was the true monster. But it's in now and won't be going anywhere...
Total wall length is about 170' on the base layer. There were about 5-6 blocks left to do on the base layer after day 1.