Given what you intend to use it for it is fine. Think of it like a linked list, but instead of only one possible next you have multiple options (if I understood it's usage correctly). Is it the most appropriate choice? That would require more information about your requirements. Also that probably would become opinion-based.
I would update the naming convention so it's clear what each field does. If it's doing too many things you might want to try splitting it into more than one field, if possible. Generally you shouldn't have to rely on comments to explain what is intended by each field as the name should make it clear. That doesn't mean you should never use comments, just use it sparingly and wisely.
For example, if your choices is the next set of choices if this particular choice is selected then you might want to prepend it with next.
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