Is there an Adobe package for a single user that would allow me to merge/combine PDFs, convert PDFs to Word, and allow me to use echosign?

Hi mm12798893

You can refer the Adobe PDF pack service or Acrobat DC Subscription for all these features.

Refer these KB doc for more information:

• FAQ | Adobe PDF Pack
• Answers to some of the most frequently asked questions about Acrobat DC.
• Pricing | Adobe Export PDF

https://www.acrobat.com/en_us/landing/exportpdf-pricing-b.htmlLet us know if you need any help.

Regards,

Meenakshi