That or start moving your wealth over by buying up property in your new country.
Diamonds are comparatively cheap in SA being a producer and all. Doing off the books transactions for stones is relatively easy as well. Flying back with cubic zirconia mounted in place of the stones raises no eyebrows at all. Rinse and repeat. You can move a LOT of money that way. If you are worried about the 10K transaction reporting thing go with smaller stones and separately transact for each.
n Boer maak n plan. https://www.youtube.com/watch?v=dMWLLKA2sC4