Kiltstore.net is a sponsor for this site. They do fine work and give a 10% discount for XMarks members. Also, Kiltstore is a big enough outfit to have what you want in stock. (I'm talking accessories. The kilt will be custom made for you.)
Whomever you decide to buy from, buy all you need in one shot, from one place. It will cost you less and there will be WAY too much BS if you try to get 'deals' from different suppliers for various items.