How to sell zip code listing and get search results

I have been working on my database and I have setup my basic site but I need to know exactly what to implement to achieve the results I want.

I want to sell a listing by zip code. For example each zip code would have a “1st place” which would always show at the top when a search is done for a notary in that zip code. Then I would like to sell other listings for 2nd place listing, 3rd place listing, then maybe a priority listing that would be inexpensive but show before all free listings.

I would also like the search to be able to include a few criteria… I think I would do this by using custome post types. (For example select a notary that does wills and maybe another criteria for a notary that goes to individual homes.

Please help me understand if I can set this up with the plug ins available ( I have purchased the packs that includes all plug ins/widgets) or do I have to set up a database with listings for every zip code in the United States and only sell one for the 1st place, 2nd place etc?