How to use wordpress as a CMS, building a product catalog?

Hi, Im building a site in WP. The goal is to have a structure such as “www.fake-enterprise.com/products/bikes/brand/item”, as a product catalogue. To do so, I defined nested categories, and organized the product types into pages, with their own template each type. I had a page file to display types (bikes, tools, etc), another for subtypes (accesories, spare parts), and then a single file to display the item, but I never got this last one working. So, changed to Custom Type Posts, defining a “Products” type, with a customized taxonomy. I tried linking categories to it, nothing. later with hierarchical C.T.Posts, later giving taxonomies to each one, and can’t seem to find a way to reach my goal. I’ve tried the structure, programming, and installing plugins. Can anybody help me? I think I’m so close, maybe missed the right way several times by little…