Basically I have around 20,000 items that I want to build out pages for. They do have a category and a single subcategory. So far I have had a nightmare time trying to import them into EE categories and subcats. There are too many issues with the slug and they have to be unique as well as other items.
Overall my question is whether I can just keep them in fields and then and then build categories and filter them on the fields? Would this be a major disaster if I don't use categories? Will performance suffer?
As another option, perhaps just create the Main Category which is around 150 categories and then filter the subcategories on the subcategory field instead of trying to map it in the nested subcategories.