"A Basenji is a slob's best friend"
Remember that and you will be right. It teaches you to pick up and put-away things you don't want destroyed, chewed, or nibbled. Especially the crotch out of underpants, the right thong/flip flops (so that you finish up with left ones untouched), your Mother's best coffee table, your best plant, (they will always pick the "best" that you have if you have multiples). I feed mine RBBB cut into chunks by the butcher - but wait until the pup gets their adult teeth. Good luck with your pup.
and while he is so young, can you visit him? get to know him and let him get used to your smell. make sure he gets the puppy shots, and the forever shots (like parvo). Try not to take him home until he has about 10 to 12 weeks of age, (as late as possible, is good). Check out Mum and Dad on the zande database, OFA, and find out as much as you can about the breed traits and habits. buy a crate that he will grow into, the crate should be big enough to stand and turnaround without touching the side, or top. That will be useful to bring him home, and take some bedding so that he will be used to the new smells. Good luck.
Go to the Zande website, and included there are some material about getting a Basenji, or not. It does not sound like your environment is right for a Basenji. The temperature upto 34C is okay, but after that they start looking for shade and the cooler spots. When it is hot here, above 40C, the older girl I have will walk, but when there is some shade she will lay down until she is ready before moving on. They are in control, and let you pamper to their needs, but they are definitely trainable.
As for flying, long distance, don't worry, I have flown my dogs to USA, Western Australia, and they have been in the special part of the aircraft hold that is airconditioned. I use shredded newspaper as lining for the crate, as they will burn everything for quarantine. They will perhaps piddle so make the newspaper big enough to absorb the piddle. For water, add some ice cubes made with Gatorade, or similar, for the trip. Make sure they empty before the journey, and, as soon as you can, give them a chance to potty on arrival. A kong or something similar, might give her a snack on the way, but do not feed her before the travel, save that for when she arrives. Do not feed her at one of the stops, as they often bolt when the airline staff feel it necessary to feed her.
Relax and enjoy the ride, and she will enjoy the reunion with you when she arrives at the destination.
For their adult teeth, Raw Beef Brisket Bones (RBBB). These bones go into nothing, so they will not crack or chip the teeth. Keeps their teeth white and good smelling breath. Whatever you feed them use the hammer test - if the bones splinter, then they are not for dogs. No cooked bones, ever.
we still have "butchers" here in Australia. these are usually local shops, that sell meat. After they have cut up the large sides of beef, they are left with some bones. The bones you are after are the breast bone, which is usually discarded as waste, but is good for dogs. Get them to cut the bone (which is about 1 metre (about 1 yard) long), into the size that is good (mine are cut into chunks about 7.5cm (about 3 inches)) or whatever size you want. The cutting is done on a bandsaw so no effort on their behalf. The advantage is that there is no debris left for the motor mower to fling at your windows, or for insects to settle on. Even at the supermarkets there are some to be had, but find out from the meat section when they get deliveries. You will pay more at the supermarkets, but you should not pay more than necessary.
I even had a bitch that hung on for 24 hours because it was raining. Eventually I coaxed her out and she kept very close to the walls and under the eaves to toilet. I put a collar on and lead, and walked her until she went in the rain, but as soon as she went, she insisted on going home, about a mile away, and she spent the rest of the morning getting that nasty water stuff of her.
Another time, it was really hot, and she was happy to paddle in the shallows of a major river. So they will get wet if there is a good reason.
Wow, she looks good enough to take home. don't worry about the straight tail, some Bs come with a lack of curl, but a Chelsea bun, or close to it is better, but do not deny a B that has a straighter tale than some. Have a DNA test done, if it is a real worry to you, but take her for what she is, a good looking girl that will keep you happy and is part of the family.
It is important to trim their nails to keep their feet compact, - like a cat's foot, and i have found the best way is with a Dremel or similar rotary tool, with sand paper attachment (it could be emery paper attachment). You can grind her nails down without hurting her, instead of trying to get it right with clippers.
Have a look at Wikipedia for osteoporosis. The article is about humans, but, nevertheless, it gives a better definition of osteoporosis, causes, treatments, and outcomes. In older females, it can be associated with de-sexing, and the loss of estrogen. Take her to a knowledgeable vet, (some vets may have a preference for this type of illness). And see what they recommend. make sure you go with a list of all your questions, so that you do not forget to ask them the questions that are important to you. Good luck.