I have several each 13 oz and 16oz fabric 8 yard tanks, one "5" yard 16oz, and one 8 yard PV at home and will weigh each on my postal scale later today when I get home for you. If I get motivated I might even try measuring the overall lengths of fabric used in each, as we all know that not all 8 yarders are really 8 yarders, etc...

I am a 45 waist, 47 hip, 26 length if that helps with any of your estimations. Only had my original kilt maker tell me I needed a 9 yarder. The rest were all made to my measurements and cost generated at a generic 8 yard price.