Source Code Evaluation (San Marcos)

I'm the owner of a specialty software in a niche market. I designed and directed the development, but I am not a coder myself. My developer/coder is in declining health and I need to have a veteran software engineer examine the source code and provide advice about how to prepare for the future should he be unable to continue.

This project could lead to more work. I also need ideas about upgrading the GUI. The application is in VisualStudio and on an Access database.