I am thinking about getting a cyclocross frame for a touring bike. I usually ride a bike with a horizonatal 54cm c-c top tube and a 54cm c-c seat tube. My inseam is 31.5in in stocking feet. I am looking at a cross frame which is 54x54, but the standover height is listed as 34in with cross tires on it. I do not know how to guage the standover height for 700c tires. Can anyone help? Is this bike just too darn big? Thanks.