LAT/LONG Database of Navaids/Fixes

I'm thinking of writing a small program to help me with route management and calculation. I'm asking if the AIRAC cycle is all that I need to get all the LAT/LONG positions of navaids so that my program can calculate and estimated flight distance if I plug in the flight plan? Do I need something else, or is there a more definitive reference for navigational information.Thanks :)