Moving to Joburg - opportunity, safety & living cost?

Hi All, I am from India, and i have been offered a job in Sandton. Offer is for R650k p.a. comes to about R55K PM plus company will provide R20000 per month for housing, Car, electricity, broadband, and other utilities. My wife and my 1 yr kid, will be coming along with me. Based on this, i request few advices on the below concerns: 1. Will R55K per month be a decent/good/very good salary, obviously minus house, car & utilities 2. Is another R20K enough for housing, Car, electricity, broadband, and other utilities 3. I have to bear the medical insurance/aid expenses - How much should that cost? 4. I am planning to have a full-time live in maid, who can take care of kid at times, and give company to my wife - How much will that cost So all in all is it a good offer to expect. Considering the above, and suppose i want to lead a standard lifestyle (once a week eating out, with one drive out a month, one movie per week, etc...) how much on average will i be spending. Secondly - How is the area Sandton, i will probably be staying there. Do i find Indian community at Sandton. How much safe is Sandton, compared to Kempton, midrand, boksburg, midrand etc... Any other advices, which i should consider is also welcome. Additionally - My Company will also be arranging work permit for my wife, She is a electronics and telecom engineer, and have 5 yrs of work ex in Software & IT space. How easy will it be for her to get a job?