"Shortbacks", as one of the biodynamic fitters at an LBS here would call us. And yes, most standard frames are not proportioned for us. Correct-length seat tube usu. means too-long top tube. Correct-length top tube usu. means too-short seat tube. One possible off-the-shelf option is a WSD frame, if you can find one that's big enough overall. Otherwise, short of a custom build, it comes down to getting creative with Technomic-type stems, zero-offset seatposts, or (and) as said, a threadless adapter. Between a smaller frame and more "sticking out" on the one hand, and a larger frame and shorter reach/offset on the other, I'd lean toward the latter. If nothing else, a larger frame will be less likely to entail front wheel toe strike.