I'm shorter than you (a little shy of 5'7"), long legs, short torso. But I have a devil of a time finding anything on the shop floor--it seems like if you don't fit a narrow range of height and proportion, you're SOL when it comes to bike shops.

One thing that I think you should be aware of is that for some reason, in the larger sizes, there can be very little difference between the unisex and the WSD frame geometries.