In that case pleats can be any depth you want. So you know (perhaps you already do) usually pleat depth is a function of sett size - or if the stripes run vertically - on the repeat of the pattern. Pleating to the stripe takes slightly less fabric than pleating to the sett. Changing the size of the reveal will change the total fabric length needed to cover a given circumference. Of course each pleat style (box, knife, rolled) uses more or less fabric to cover a given waist size.

My apologies if you knew that already and good luck with your project.