Well, you'll want to preclude all those things, the actual order you do it in doesn't really matter (the list auto-sorts to alphabetical anyway) as long as they are precluded. For ABs that would mean the AB,the Edge and the Skill (you could also preclude the Drawback if you really wanted but it won't matter if you don't)
As Paragon mentioned it's very helpful to be sure you define a Source for your setting to help prevent the stuff you're using in this data file from showing up in your other SW games and it helps to use a 2 character designator on your UniqueIDs just to help keep them Unique. (See any of the free data files for some examples).
For adding a Trait just use the Derived Trait tab. You can find examples of Traits in data files for things like Hell on Earth Reloaded or Deadlands Noir (Dominion), ETU, which uses Academics, or even Pirates of the Spanis Main which has, ta da, Fame!
Then, if your players need to modify it through something other than, say, an Edge or a Hindrance you would just use either a Temporary Modifier (on the In-Play tab) or a Permanent Adjustment (on their Personal tab) to make those adjustments.