Mix these or not

I need to repot several bonsais. There is no drainage holes in the pots. The plants were purchased that way. It is spring in eastern Connecticut USA. I have same size pots. I read the soil should be 30% decomposed granite, 30% pumice, 10% course sand and 30% organic matter which is why I am thinking about mixing the two brands. White bag doesn’t give breakdown of ingredients

Lynda;
Use either one or the other.
Both are good and can be used to repot bonsai.