Final Project Preparation

As the final project comes near, I find myself struggling to find balance between content and formatting. I'm trying to keep white space so that the document doesn't look overwhelming. Unfortunately, to achieve this, I will need to add more pages so the final document in print will feel thicker. Are other people feeling the same way? What is worse: a longer document with more white space or a short document crammed with info? I'm just trying to get a feel for how other people feel for what people think...