So many people make snap decisions based on the cuteness factor of puppies and never even stop and think that they should research the breed before making an impulse buy. Kudos to you for doing things the right way and also for planning to rescue!
I'm sure you've probably exhausted all the internet resources available regarding Basenjis, but, just in case you haven't seen them, here are a few to look at:
http://www.basenjicompanions.org/
Welcome to the forum! We'll look forward to pics! 🙂