If you are going to wear it I would keep it standard kit, no flyplaids, jabots, cromachs or the like. In truth, most likely the only item of Scottish wear that made it long here would have been a bonnet.
Keep in mind you won't be authentic, but most of us on this forum are wearing kilts in 21st century America, so we aren't in line with the historic average of our era. None here should treat you too poorly, whatever choice you make.