dahtzu what a great mix you ordered. Can't wait to see photos.
We have to see where we are on quantity after shipping to the rest on the list. But if we run out this year, we will be running it again next year.
Here is a link that will help you understand what will work for potting mixes. Without knowing where you live (as in weather/growing conditions) it is hard to say what might work best for you.
The thread "Potting Mixes and Difficult Soil" in
Sempervivum forum
What nursery did you order your new plants from? As soon as I know I will give you a link to post photos for them. I am so excited for you.