Generate your crud for the 4 tables using gii or Giix*
Then localize the code that redirect upon saving in the create method of your first model’s controller, and change it in order to redirect to the create method of the second model’s controller, ans so on.
there are other generators, notably directed towards Twitter Boostrap webapps
It was a footnote to the "*" in the first line of post (ie apart from gii and Giix, there are other CRUD generators, especially useful if you plan on a bootsrapped webapp)