Thank you so much to everyone who has replied. I really appreciate it.
I know its not going to be easy, but at the end of the day we really believe we are doing the right thing for our family, and especially my son.
My DH said this the other day, "In the 1820's our forefathers left their homes and families in England to come and establish a new life for themselves and their loved ones in SA. It is now time for us to start this process again, and to start our own family dynasty in a place that offers a future for our son."