So I have moved on to Plan B. I put in two chain spots today and will be putting at least one, if not two more over the next week or so. Gigz absolutely loves the new setup. I was expecting some barking and whining and general carrying on, but he just laid down and chilled out as soon as I walked away. He's enjoying the sunshine and definitely seems to like having more room to move around and stretch his legs. So that makes me happy.
I thought I would share a few pics of the new setup so people can see how I did it in case they want to try the same thing.
The view from afar:

You can see a little bit more how I put it together in this pic.

So happy.

Gigz is such a ham.

I hope that is helpful to anyone who might be considering a chain setup. I know pics of other people's setups really helped me figure out how I wanted to put this all together.