Welcome to permies Mark, and apologies for the belated greeting, your post somehow slipped through.
Mark Thomas wrote: haven't quite decided if I am seeing the light or going through a mid life crisis!
Definitely seeing the light
Speaking of which, I imagine South Africa must be an awesome place for solar stuff!
My place is very small, and I've decided it can be a great thing as design-wise it demands ingenuity and discipline.
I also like being familiar with nearly every plant...
What's your rainfall like? I'm very wary of raised beds in arid/sandy/hot climates. Are yours managing ok?
this thread might be helpful for gardening in your climate.