I have experience processing monthly and quarterly workbooks for MBO (Managed by Objectives) business processes in pharma industry.
Master script is able to process thousands of entries, send personalized communications based on certain criteria, attach corresponding files (or tracking IDs), link to marketing tracing apps, send follow-up notifications to those that didn't respond, process returned workbooks etc.
Your budget seems a little bit unreasonable for the task at hand, but let's start by having a deep dive into the business requirements and we can take it from there.