Building an admin site for company inventory

I am building a site for a car dealer and the owner wants to be able to add new inventory to the site himself. Each car that they add needs to be listed on the main inventory page and have a link to its own individual page with information and photos for that particular car. In addition to that, the main inventory page(s) needs to be set up to show 6-8 cars per page with columns of basic info (make, model, price, year and mileage) and to where the user can choose to sort them by price, year or mileage. I've seen tutorials on setting up an admin-driven store with Data Bridge and adding page templates with PowerCMS Builder, but I'm not sure which one I should use or if either one would work for what I'm trying to accomlish. Any help is appreciated.