If I were you, go to a LBS and try out a couple of bike in that size, then go for the one that feel comfortable, i.e. not stretched out, or cramped (reach is much more important than seat post height).
@edscoble started
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If I were you, go to a LBS and try out a couple of bike in that size, then go for the one that feel comfortable, i.e. not stretched out, or cramped (reach is much more important than seat post height).