Looking for enough bracing to brace and pour a simple rectangle, 9' tall and approximately 40'x60'. Not very interested in purchasing new bracing, will likely only ever do this single build.

If you don't find anything local, I have enough to do your building. Located in north Louisiana--see post below.

You can always resell any bracing you purchase if it was new or in good condition when you are finished with it. You might also want to consider using Zonts and Zuckles:

https://www.fab-form.com/zontBracing/zontBracingOverviewLp.php?gclid=EAIaIQobChMI7I-VgZTE5QIVrgOzAB2QhAhaEAAYASAAEgLFf_D_BwE

I agree. Use Zonts and Zuckles. Keep the boxes in good condition and put them on ebay when your done. That's where I got mine