Hi Zack, welcome to the Forum!
I was in the position you are in about 2 years ago, researching and getting ready to own my first basenji. After considering a few breeders, I was able to choose an excellent breeder, and we could not be happier with Kipawa.
You're definitely going about this the right way - good for you! Research and spend time with the breeder's basenjis. Basenjis are very unique dogs. They require a fair but firm owner and they need to understand that "nothing in their life is free" - that if you give something to them they will first have to do something for you. Always staying one step ahead of them in thinking is beneficial!
Basenjis do need a fair bit of exercise, I'm sure you're aware of this. So hopefully you'll have the time available for puppy classes (do you have that there?) and some good long walks. I agree with not letting a basenji off leash unless they are in a fully enclosed/fenced area. Many of us have heard horror stories of what has happened to people who have let their basenjis off leash or have had their basenjis escape out the door. No one wants to have that happen to a dog they love. Being off leash might work for months, but then there is that one time where your basenji sees something moving and they can't resist going after it. Remember, these dogs are sight hounds and to this day, are used for hunting. Their instinct is to hunt - to go catch something that is moving. It's not something that you can train out of them very easily at all.
One thing to be diligent about when you choose your puppy is to make sure that the parent dogs have been tested for Fanconi Syndrome. Again, I'm sure you've read about Fanconi in your research. Don't take someone's word that they have tested their breeding dogs. Ask to see the documents showing the breeding dogs have been tested. Request a copy of the documents. If you have the parent dogs names, you might be able to search online for the information. We can help you with that.
You live in a beautiful area of the world! So much history, a country rich in colours, flavoursโฆ so many things! Thanks for sharing the pictures, and once again, so nice to meet you!