Your climate looks for me hot enough to grow Vetiver Grass rows to reshape the slope slowly to terraces.
Vetiver Grass is unbeatable for erosion control and will not spread or seed itself.
The roots can grow in sandy soil up to 12 feet and more so it neither minds droughts or water logging.
Also it works as a great water hold back hence more can drain in the ground which allows you a wider range of trees.
When the risk of fire is present mow it down to 10" and you gain a lot of free valuable mulch to build up your terraces with fertile soil.
If you wanna start go on google earth and screenshot your land.
Then paint(box) into this screenshot a roster of 2x2 meter squares and measure the land levels, so you create a topographical map and can stipulate where you want to plant the barriers.
(I have 6.6 acres so I made 10x10 meter squares)
I attach my topographic map for a better understanding and a link to my post here about starting my Permaculture Food Forest.
Good luck and enjoy your project