I've always thought that there was another dimension besides waist, hips and lenght and that that was the angle on which the waistband ends up when the kilt is on your body. Everybody is built different and an evenly made kilt can therefore be "low in the front" and "high in the back".

The black kilt looks too long to me...personal taste, though...if that's what you're comfortable with then you should probably think about a longer version of the tan.

Best

AA