Weighing in with one more bit of advice. Suits with added stretch can really help with getting a good conforming fit, especially when on a "non-standard" body type. (open to suggestion on how else to phrase that....)
But.... try to get the size and fit as close as possible to "right" in the first place. Stretching the material significantly makes it thinner, and therefore less warm. Also could be putting added stress on seams that may just be the first point of failure down the road.
My main brand is Henderson. If you check out the various brands, and versions of brands they sell, you will find that some have offerings in Short and Tall versions of the standard sizes, but not all brands and versions. Most can also have ankle and/or wrist cuffs shortened a few inches for a reasonable charge before shipping. Better to get a shorter suit that fits right than to stretch out a smaller size due to avoid extra length.