I just noticed my first reply was never posted. So to summarize I'm 5'0" tall with a 27" inseam, meaning I'm pretty short in the legs and torso. I had good luck getting comfortable with Trek's WSD lines Lexa and 7.2, Fuji's WSD Finest and Absolute were also great. Since you're worried about the weight going up the stairs, these two are wonderfully light.

Jamis is a great, durable brand, but most of their lower level bikes are made with steel forks so they are considerably heavier. They also tend to make the stand-over heights taller- I couldn't clear the bar on most of their models!

Which did you find fit you best?