Set/recall variables, reflow rest of form to fit # of characters?

I need to have a several page "form" where variables would be set on the front page as answers to questions, typed in fields of variable length. (The answers may range from 20 to 200 or more characters long for each variable being set.) Then, on subsequent pages of the form, I want the document to use those variables to fill fields and re-flow the rest of the document so there aren't big gaps in the text. I want it to basically look "custom-typed" with the info provided in the fields on the first page. We also want to protect the main text from being changed, which is why we were thinking of Acrobat. Is this something Acrobat 8 can do, and if so, how? (I could do it in WordStar version 1 about 20 years ago so I imagine it can still be done, somehow!)
 
Thanks!