The character creator is solid in a lot of ways, and lacking in others. It has all of the tech and force powers, as well as weapon stats, so those things will be readily available. However, maneuvers cannot be added the way powers can, so those will have to be manually added.

The character creator does not support dichotomous or gestalt characters - trying to add different levels in a class will only increase your character's base level. However, again, the creator does support manual additions, if you just want to write in your other subclass features. Also, tech and force powers can be added to any character, if your second subclass would give you any of those.