I am sorry to jump in late & reply.
I have been way to busy to spend time on the internet & am indulging myself the week. It may be months before I visit the Forum again.
Regarding breeding your boy. Most breeders will not breed to a male they do not know. They pick a Stud dog for his Health Testing, Pedigree, Show record, conformation & the owners connected. Sometimes location plays a major part. Conformation plays a big part of picking a Stud dog i.e. will he improve on my bitches movement? Topline? Earset?
No dog is perfect & we are breeding to improve the Breed not to make money or just have puppies.
Not questioning your information, but I would reccomend doing some research & getting all the information you can about you boy. Next regardless of breeding him or not, do ALL the health testing. This will be helpful for your Basenji's future health & maintance.
Not all dogs or bitches are 'worthy' of being bred. Find out if you's is worthy & be picky about the bitch he is bred to. It is much easier to buy a Show quality puppy than to breed your next Show prospect.
I work for a Veterinarian & many Dog owners want to 'Stud Out' their male. This never happens! As a bitch owner I will find the best dog out there that will mesh with my bitch to produce better puppies.
Lastly I have had a dog die very suddenly from prostate problems. He died before I could get him to the Vet. This was years ago when the risk of anestetic was not worth it to me. He was a mix breed & a wonderful dog. Gumby taught he so much in life & his death taught me even more. Don't make the same mistake I made, it isn't worth it.
NOT all Finished Champions are of true breeding quality. And "Sperm is Cheap"!!
Best of luck & hugs to the pups.

Becky & the Ninjas