Hello joliett89. What is the rest of the site (non-WordPress) delivered as? HTML? PHP? Or?
My approach, without knowing all of the details yet, is that I would use WordPress as the primary "wrapper" for the entire site. Then I would handle static HTML or PHP pages on a case by case basis. These may be interwoven into the WordPress CMS via calls in from within the template files or "glued on" as stand alone resources with their own visual framework.
The advantage of using WP as the over-arching tool for delivery of the resources is that you will have a consistent framework and CMS to use/rely on. If you need to make modifications, one change and it's done for all pages within the CMS. Does this seem appropriate for what your situation is?