OK, I'm just suggesting that, however you play the aspect I mentioned you may get into hot water - with a Scottish readership, anyway.
Perhaps the exact when and where would help us to comment more. There is a tendency, especially on this site, to suppose that the stereotype of "Highlanders" applied throughout the Highlands and was constant over time and social class. For example, if your hero was sufficiently well-to-do to own a horse then he would not have worn the kilt, possibly not even at his wedding. If he lived near the periphery of the "Highlands" (including the Western Isles) he would often have worn Lowland garb. So much had to be imported into the Highlands that itinerant peddlers did a good trade in all sorts of goods, including clothing. The portraits of assorted kilted gentlemen covered in bling are not really the "whole truth".