Hi Mima, I remember the soil I used for my cycad, I got it as well from Home Depot, Supersoil Palm and Cacti soil. Good for palms, succulents, cacti..on its own it is okay already, but as I have mentioned earlier I just added off hand some perlite. I just do that whenever I am handling my succulents and other drought tolerant plant for good drainage. What is important too is that when you plant that cycad, the caudex must be above the soil line, so that when you water it, it is exposed to dry fast.
Oh btw, be mindful of the tips of the leaves..they are pointy sharp.