Here is a link to the Facebook Event: https://www.facebook.com/events/359744554994753/
Join the Facebook group "Orange County (CA) Basenji Meet Ups" https://www.facebook.com/groups/942444349188499/
They are trying to set up meetups at least once a month. With the COVID-19 virus meetups were on hiatus but now that some dog parks are opening up meetups for Basenjis are starting up again. I live in San Diego so I really have to think about driving 1.5 hours with 2 senior Basenjis.
This little girl may not fit your criteria but she is not horribly far from you in Arizona, at TarSha Basenjis.
In back issues of the Basenji Magazine there is a series of articles by Jeff Schettler about training his Basenjis to track and hunt. I have no idea if Jeff still has or trains Basenjis but you can do an internet search "Jeff Schettler Basenji" which will bring up a bunch of links. Jeff has a web site as well as a Facebook page.