Rufus, here's strictly from massive experience.

Whether it's an 8 yarder or a 4 yarder... it doesn't matter. The material has nothing to do with anything.

If you're meaning a "traditional" kilt with the hidden-stitch and the low hip sewing ~VERSUS~ the "casual" kilt with the beltline and loose pleats... then we have a discussion.

It's easier to make a "beer gut" kilt in a casual, but not impossible in a traditional. Your hips are pretty normal really... but MAKE SURE to let your kiltmaker know that there's a "Molson Muscle" involved in the fitting. When done right, it's really NOT a problem to overcome. Trust me... we know this one all too well!!!