One of the difficult things I have found with gifted kiddos is their ability and desire to argue (agree with everyone else, not in a defiant way). However I also think they are just like every other kid, in that they do have to learn when it is okay to question limits, and when they need to abide by the rules EVEN IF they don't understand or agree with them. My personal rule for my son (who is just like you are describing!) is that he can question us 1x, and we will try to explain reasons behind it so he can understand, and if he continues to argue, we are not above the "because we said so" since he needs to abide by that with his teachers.
