Your puppy is adorable and I am sure will give you a whole lot of pleasure. I think that showing in South Africa may be more fun than it is in the US because there aren't as many professional handlers and it becomes more of a social occasion, sort of like it is in the UK. I would wait and see how your puppy turns out. Very often a puppy that is thought to be a show puppy doesn't turn out to be very good for one reason or another, and sometimes pets can be pretty darn good! So, my interpretation of "show" is that at the time of "grading" or sale, the puppy has the POTENTIAL to become a show puppy. Usually that means that it doesn't have obvious faults, like an extra crown, bad ridge, kinked tail, bad bite, etc. Wait and see what happens with your puppy and if you just want to "test the water" enter one or two smaller shows and see what happens. You probably would want to take a few handling classes ahead of time so you know what to do and you can always take more if you find it is something you really enjoy and want to continue.
Caroline