Thank you for the input guys!
Starting to sound promising. It looks like flights for 2 will be around R36k. It seems possible to go for around 10 days and stay in budget. I will do some more research regarding accommodation costs and car hire etc.
Would be interesting to see the potential for a process engineering job there... 
18k is the max price, but you should be able to get away with 14k if you play with some dates.
Also if you have time and dont mind travelling time there is emirates that flies via dubai as well for cheaper BUT it increases your travelling time from 18hours to 25-30hours.
I went for 2 weeks in June and it was fun! wish i did 4 weeks though. I had friends to stay with so cant advise on accommodation but public transport works a charm. (do get a hop card as its much cheaper)
Remember to start visa applications early as it can take some time