Not a problem. There is a great source of support and advice on this forum. So feel to ask away!
You are right. Your application is sent to Mississauga. I asked about Pretoria as I did not know you hadn't submitted it. Once you are approved as a sponsor your application will be sent to Pretoria. It says to be taking 55 days for sponsor approval, however that has been all over the map anywhere from 6 to 60 plus days. Then it states that 80 percent of applications are processed within 27 months. But most of us in Pretoria are hoping its a lot shorter and we are processed in the 20% or 40% of cases!
It is a great thought for our spouses to come and see where we live. But once we apply for sponsorship, immigration does not seem them as leaving or having a strong tie to return back home. That said, some do get their TRV and come visit. However, that is a very small percentage out of Africa, as I have learned. If your partner has strong ties to Capetown and can prove he will return after his visit, then you are likely to have a strong case. But if he does not, then it is not likely to be approved.
Hope that helps... and like I said, if you have any questions please feel free to ask!