What he said -- at a glance, I'd give your meaurements perhaps 20 pleats, 1.5 reveal, 3 inch depth, and a deep (6-inch) pleat either side of the apron. While I don't use a percentage for fell, rather base it on customer measure, 5 does seem short. Short fells can be used deliberately to make the pleats spring outward, I know Celtic Warrior kilts do this to make their contrasting inner panels show up better, but it's not normally what you want.

Pictures would help confirm these opinions.