Yes of course bring your kilt when you come to Scotland.
I live in Scotland and wear a kilt most days.
Wearing a kilt casually you will blend in well in the Edinburgh crowd, its all the fancy bits like wearing long garter ties and a cap with five feathers in it that would make you stand out as American.
The kilt is a very comfortable garment in which to travel on a Trans-Atlantic flight and wearing it for travel helps keep down the weight of your luggage.
You won't need to bring an Argyle or Prince Charlie jacket or Ghillie Brogues unless you intend to wear your kilt on a more formal night out.