I agree 58 isn't gonna fit you well. Is your inseam really 33/34? Is that your pants inseam? Measure it instead by cramming a book up in your crotch, up against a wall in socks. My inseam is 34.25 and I'm 5'11", so if yours is really 33/34, you must have a long ass reach, so while a 58cm may fit you ok for standover, that's really no measurement of good bike fit. The reach to the bars will be too short for you, and that's the biggest factor of bike fit. Go to a LBS and get fit imo.