Plug in or coding?

I have a series of php pages (each one is a report with tables, charts, maps, drop-down menus, pagination, etc.) that use ajax and jscript to pull data from an mssql database. The database needs to stay mssql.

Question: What is the best approach to integrate those reports in a WP blog? Do I have to create special templates/pages for each php page? Is there a plug in?

Take a look at the reports: https://roichecker.com/query.php?location=Redding,%20CA&business=Full-service%20restaurants