I only need to create form fields for editable text in Acrobat Pro, I wouldn't be trying to create any other element for my customer to be able to edit.

As far as I can gather from online tutorials, I would create my main artwork design in Illustrator and then save as a PDF without any text. Then just add form fields in Acrobat Pro where I want text to appear.

I don't really like the frustrating limits of Acrobat Pro so if I can get Word to work right for everyone who had 2010 or later I think I'd be happier with that.