@ brav,
which location will you be your duty station? Johannesburg,Pretoria,Krugersdorp,Soweto,Sandton,Magaliesburg,Mindrand,Springs???
300K rands annually is beautiful money by the local standards (RSA) and when used locally,but the South African authorities have very strict rules governing the repatriation of money...the last time i enquired about this,they were allowing a maximum of R5000 per month. so many foreigners would accumulate many rands,then travel to Botswana to send it....no wonder that is why we don't have many diaspora from RSA doing any meaningful investment back here.
25k per month is enough to cater for all your needs and save atleast a quarter as houses are not expensive in middle class estates. foods too are relatively cheap...
the only shinda is thuggery and xenophobia...
NEVER TALK OF A RHINO IF THERE IS NO TREE NEAREBY - ZULU PROVERB
...besides, the presence of a safe alone does not signify that there is money inside...