One thing I would suggest, is not to do a triple. SRAM makes an 11~32 cassette now, than when pared with a compact double, gives you as low a gear, but without the weight penalty of a triple. Also has a better chainline, which means less chance of throwing a chain and less cross chaining issues, and the side benefit of less shifting. I wonder why it took the manufacturers so long to figure that out. It would require a 'GS' mid size cage on the rear derailleur but the LBS should be able to set that up. You may not think you need that low a gear, but if the bike has a mid-cage rear derailleur on it you can swap the cassette in 5 minutes to a triple-equivalent climbing gear. No reason to lug a triple any more IMO. I set up my commuter that way last week; took the triple off and put on a compact double, using a 12~28 in back. If my route changes, and I need more I'll just put on a 12~32.
At this stage, it is best not to get hooked on a brand or WSD. Go to several LBSs and have them put you on a few different bikes and get the feel of them. I'm shorter than you and mens models were too big for me, but you have that option open to you. This is as much a search for a good LBS that will work with you to find the right bike and get it tweaked as needed to fit your needs, as it is a bike search.
Tzvia- rollin' slow...
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