That's brilliant! I love the beauty of efficiency and follow my leader too.
We work a lot with micro-organisms, biochar, fungi and good old mulch. Our trees are mature now, so cover crops are largely incidental, though we do interplant with a lot of nitrogen fixers. Clover, if it grew here would be sweet, we use perennial peanut which fills the same niche. Cacao is an understory tree, and our vanilla and black pepper are vines so technically understory too. The fruit trees vary, some understory, but mostly canopy - the farm is a shady place

. We just keep mulching and creating good environments for all the micro beasties. We're in the rainy season just now, a heavy one - I think we're up to 24 inches this last month. And with a heavy clay soil, we don't have to irrigate too much :/
I'm looking into trying sorghum - grains are really hard for us here, fodder is much easier but it's trying to up those carbs that's making me still buy the concentrate.
You must have a good number of chickens then? What are you feeding them? Or rather, what are you supplementing the pasture with? Alkaline, dry, temperate - interesting! Thanks for sharing your knowledge and experience!