Jamila, since you are buying them this spring, the next few seasons will reveal their growth rate and size and number of offsets if any. You may be surprised at how fast some grow out of their 4 inch homes and you need to put them into bigger. I would say if there's any that you especially like to look at or is a favorite, by all means the more the merrier. But if you are just starting out, you may want to generally feel them out in terms of growth and care and satisfaction.
And of course, they don't have to be singularly in pots. They could be a grouping until they get too much for the pot and then they can be separated. If you are concerned about them getting mixed up, keep the tags with them in whichever pot you plant them in and to make sure you can tell them apart you might consider putting the most contrasting ones next to each other. That way, when they happen to grow into each other you can still see the differences so to separate them correctly to keep ID. I'm big on container plantings for my succulents, but here's a couple of my semp ones:
