If you're going to be on tar for the last km's I'd stretch it a bit more. For gravel, I reckon replace, if you don't want to repair punctures.
PS: How many km's did you get so far?
I think they are +R2k, close to TKC80 prices, but your mileage will be a lot better.
I'm looking at getting a set when finances allow
EDIT: I see BF Motorcycles in Knysna sells them for R2400
Ek het een hier in Stellenbosch gesien wat Karoo 3's opgehad het, voor en agter. Egter nie seker oor die groottes nie. En ek dink ook nie hulle gee goeie kilo's nie.