I don't dare do that, because I know that they won't fit. My butt is too big, and my legs are too short! So what fits my leg length won't fit my butt, and vice versa. And my feet are so odd that I need to try everything on. :-)
Actually, I have the answer to your breech prayers. I bought something new, breeches made "full" for larger butts, hips and thighs. They fit great. Let me know if you want me to dig them out and give you the name and type of them. If you want sizes, I'll probably have to do that privately. :)