Hi Onie, I wish I have a farm like yours. The quality of your soil based on the images I see here is good for avocado trees. I once had an avocado farm with 300 trees growing on a slope in Southern Spain. The trees like rocky combined with good soil. It would be a good. zone as avocados need plenty of water... in spanish the term for avocado is aguacate ... which means agua for water. We sold the property because there is so much work to do and we are "aging" retirees. The only pleasure you get is when the harvest comes and see that fruits are huge and there is plenty to harvest.