Hello. I am flying on aer Lingus, operated by aer Arann from Edinburgh to Dublin. I am a bt confused about the checked in baggage restrictions. I am checking in a large bag, weight about 22 kilos, and since the maximum for free is 20 kilos, I purchased 3 kilos to cover the excess. Now I am considering checking in my carryon as well since it is a touch larger than what is allowed. My carryon weighs in at 11 kilos, so am I correct to purchase another 11 kilos in excess weight? I just don't want to make a mistake and have to pay excessive fees later. Thanks for any advise and confirmation!