A Question about PDF Fillable Form Drop Down Box

Hi,

A newbie here.  I am creating a fillable form with five drop downs (each containing same list).  The drop down list has some 120 or so values (just imagine a list of US states and names of all the countries in the Americas). I have a couple of questions from that first time experience and would appreciate forum members advise:

(1) Is possible to enter the list (of items in drop down) via a batch file? I would avoid typing each item individually five times in Properties.

(2) Is there a limit on number of items a drop down box can accomodate?

(3) For the first box I tried entering manually. After around 78 or so, the system would not let me enter more. When I previewed it, at size 8, the system would only display 76 items. If I increase the font size to 10, the number of items displayed goes down. Any suggestion, how can I enter more?

Thanks in advance.