Puffer,
While I think you look really good, I would have to agree with Jamie on this one is parts. The only things that really don't go IMHO is the sporran and MAYBE the lairds plaid. I would have gone with a plain brown sporran like the one that Jerry sells, and then attach a really nice Celtic pin to the front kind of in the way that they would have regimental sporran pins, or nothing at all. The stick? The stick kind sir goes very well with the outfit. A lot of officers (especially in the Irish Rgts) would have had a nice walking or "Pace" stick, also known as a swagger stick, and while they were usually plain cane with a silver embossed regimental top to them, the one you have works very nicely.
Just my two cents.
Cheers,
Chad