Itinerary in KTP looks OK to me, but I've got serious doubts about arriving by airplane in Jo'burg in the morning of the 13th and driving all the way to Upington the same day. It's almost 800 km (500 mi), and only the first 100 km are big wide interstates. After that, it's only two-lane roads and last time we were there (last year september) there were lots of road works on the way which cost us a lot of time.
It took us almost 11 hours to reach our B&B in Upington...
Don't forget to reserve some time for stocking up on supplies in Upington.
Last year we also booked one night @ Gharagab, but found the drive up from, and back to Nossob a little too much for just that one night... Still, Gharagab is a great place to stay, and the ride up there through the dunes is amazing.
For the return voyage, I would recommend to stay at Twee Rivieren on the 24th and stay in Kuruman or even closer to JNB on the 25th.
I think the Terios should not be a problem, Nossob-Bitterpan is not a big issue. However, with the Daihatsu I wouldn't drive directly from Bitterpan to Mata Mata, but via Moravet & Urikaruus.
Have fun over there, hope you like KTP!!
Thanks for the helpful comments. Here is my booked itinerary:
Feb. 14 Twee Rivieren
Feb. 15-16 Nossob
Feb. 17 Bitterpan
Feb. 18 Mata Mata
Feb. 19-20 Kalahari
Feb. 21 Twee Rivieren
Feb. 22 Nossob
Feb. 23 Grootkolk
Feb. 24 Mata Mata
Only camping is available at TR on the 24th. This is a late booking, so I've booked as best I can. I agree that Upington is ambitious on the day of arrival. Kuruman may be a better stopping point in both directions. Provided I get a reasonable start from Kuruman on the morning of the 14th, I don't think it will be too challenging to get to TR by 1600 or 1700 after a good stop in Upington.
If chalet availability opens at TR on the 24th, I'll switch from Mata Mata.
Any recommendations for lodging in Kuruman?