Shoes and buckles in the 18th Century were expensive clothing items and authentic reproductions are expensive today as well. Buckles of the early 18th C tend to be smaller than those used in the later part of the century. You do not need to have buckles though as the shoes can be closed with cloth ties. See links page for sources. As stated above, there are no authentic stockings available.
Current policy is to choose a light wool or cotton stocking.
Also, a friend of mine had a great idea to tone down the bright white of his new stockings. Keep an eye on these though unless you want a brown pair of stockings. 5-8 minutes ought to be enough to dull them to a more reasonable shade. If wearing breeches, stockings during the early 18th Century were being worn over the knee and over top of the breeches instead of tucked in underneath. A special thanks for Capt.