Since I was the one that brought up the box-pleat option....

Read Matt's articles on box-pleating (I added the links to your other post). That will answer most (if not all) of your questions.

After you spend more time on the board you'll see that a number of us have become "converted", if you will, to the box-pleat. With approximately the same amount of material front and back, it is more balanced (noticeable both sitting and standing), cheaper to make (as it takes less material) and is indeed an older style....thus it cannot be accused of not being a "real" kilt by the less informed. I've made both box and knife pleated kilts in 16 oz. wool. I look forward to making at least a few more, but unless I suddenly find myself joining a pipe band (not bloody likely) they'll all be 4-yard box pleats. Warm enough for winter wear, cool enough for the summer months, comfortable when walking, swish factor enough to turn heads. I'm sold.

My original intent was to make sure that you were aware that there was this neat free downloadable guide that is the companion to the book you purchased, and since you didn't mention that you had this bodacious hunk of fabric, I wanted you to know that there were some less costly options as a first-time kilt maker.