[development] Need 20 fields of form input

I'm looking for a best practice here...I need to store *up to* 20 CCK fields of form input, but hopefully not all on one form. Should I use node/add, then write a .module using hook_form() to request just the first two or three, then redirect the Submit to a series of editing forms (maybe using tabs) for the remainder? I noticed that the New York Observer (http://drupal.org/node/141187) uses 110 CCK fields, though probably not all form input. What's a good practice to collect that data? Thanks! Sean