Please take this as constructive criticism and not negative. And keep in mind that I do not profess to be a fashion or style expert!

But (aside from what has been said already, which I agree with), there are a couple of things I would do differently.

First, when I think "kilt suit", I see a waistcoat as being mandatory. Maybe that's just me. But it makes a world of difference in the look.

Second, I would probably go with a non-striped shirt. It draws all the attention from your outfit to your chest area. A waistcoat may help with this, but still, the "flashiest" part of the suit is going to be the striped shirt and tie. I would keep those items subdued so they fit the overall look a little more uniformly.

Third, I would not mix a tartan tie with a striped shirt. That's way too much going on in the same vicinity. Not only in terms of different patterns, but different colors as well.

I think your "kilt suit" would really come together with a matching waistcoat, perhaps a plain white or gray shirt, and then let the tie be the color splash, perhaps in red silk to match the pocket square and garter ties.

Just my 2 cents, and it's worth exactly what you paid for it!