The idea is simply great, in my country there was an ice cream sale that had more than a hundred strange varieties of flavors.
Today it is only a curious and distant memory.
You could start creating recipes little by little in your free time, so that when the conditions are right, you already have part of your menu in advance.

It is very important that you take a food handling course, at least that is what basic instruction is called in my country.
I have worked for years in the food area and I know that it is important to be aware of the procedures to avoid contamination, hence the recommendation.

Best of luck on your project.