Therein lies the magic. You can only display 8 lights at a time, but no one said you couldn't have as many as you want. You just have to manage which lights are visible at what time.

It is, perhaps, possible to fake additional lights if they are required. But 8 lights is actually a lot of lights, so give it a shot first and see the results. You might be pleasantly surprised what you can do with that number.