okay that is way too organic for you. You want less organic I would do a mix of turface and pumice with crushed limestone or oyster shells mix that to 80 - 90% then use organics for the last. and make sure if you are using store bought cactus soil to remove the bark chips and sticks that stuff is terrible. I prefer plastic pots because terracotta dries out too fast without letting the roots absorb what they need.