I think that's good advice. I'm no major pro at this but my experience has been that top tube or cockpit length is far more important than standover height. I'm 5'9" (but short legs) and always feel best on a bike that is supposed to be for six footers. I spend more time riding than standing over the bike.
Be sure and try a bike (if you can) that is supposed to be too big for you... you might be surprised.