Hi Greg:
I would encourage you to speak with your local IDNR district forester as you begin this endeavor as they will be an excellent source of local information:
IDNR district forester map: http://web.extension.illinois.edu/forestry/pdf/tfb-nres-201-14.pdf
I don't doubt that some of the Purdue and Pence "select" black walnut grow faster and straighter; however, I'm just not sure the net benefits justify the costs, especially on average black walnut growing sites. Feel free to discuss that option with your local district forester in addition to sourcing seedlings for your tree planting project.
Best of luck!