Fill In PDF field length

This may be a ColdFusion question, but I'll start here.

I am trying to do a mail merge using CF <cfpdfform tag.

I have a query with 100 records that loops through the PDF with these form fields.

My query loops through and adds/inserts the query values to each PDF and creates 100 pdf's with the filled in values.

Because i don't need to worry about the length of any of these values, It works great.

But here is where I have my issue

When the query value is within a sentence I don't know how large to make the text field on my blank fill in PDF

When the city name is Ida the field needs to be a certain width and when the city name is Oklahoma City it needs to be a much larger width..

Is there a way to deal with this?

ShouldI be using a different way to merge query data with these PDFs?