I'm just now seeing this, and when I saw your first line: "Anyone have any good advice on pouring concrete solo." I was going to say "Don't", but I see you got it done. That looks good.
This reminds me of a story one of my former co-workers told me. At one time he had a job driving a mixer truck. He said he showed up at a house one morning with an order of concrete. He didn't see anyone around, so he knocked on the door. A lady answered, and told him to go ahead and pour it out in a certain spot in the yard, and her husband would take care of it when he got home. He tried to explain to her that it would be set up by then, but she kept insisting. He called the dispatcher, who replied that they had paid for it, so go ahead and do what she said.
My co-worker said that after that he'd drive by that house occasionally, and it took quite a while for the guy to get it all broken up and hauled off.