You might consider using HTML forms. PDF forms are much less useful than they used to be, because the success of PDF means lots of people (like Google, Apple, Microsoft and many more) make their own PDF viewers, which often work very badly with PDF forms. HTML forms are universal. You sacrifice full control over layout, sure, but you get something that works. If you go for PDF forms you will need to provide tech support to the form users as they struggle with different browsers, Macs, Windows, phones and tablets - you will need all the devices they have, to support them.