Instead of interactive PDF, consider Publish Online. Doesn't require a special reader, just a browser. And you can add other interactivity besides links. Here are some sample documents, some of which are smaller catalogs (only because they're easier to show as examples): http://bit.ly/PubOnCollection
Also, not sure in the translation what you mean by link an article to the page it's on.
As for page numbering, put the Page Number Marker on the Master Page, and all numbers will update as you add or remove pages. (Create a text frame, then insert Type menu > Insert Special Character > Markers > Current Page Number.