Thanks for the great material! To set an expectation, I'll hopefully be able to get this done in the next few weeks. I'm off on some work travel starting tomorrow, and won't have my OOTP/Sketchup laptop with me, but from what I'm seeing I don't think that it'll be too difficult to make the grandstand and field. As usual for me, the trick will be making the background and surrounding area something I don't hate, but I'll try and get over myself.
I'm also happy to iterate on that if desired, or use a background or approach you suggest or prefer...