I'm looking at a touring frame-set and they have a general recommendation of 52cm for someone 5'3"-5'7" and 54cm for 5'7"-5'10". I'm ~5'8", but have a short torso. I had a 55cm road bike(90 Miyata 916) that I ended up selling because I was too stretched out even with a very short stem. Should I go for the 52cm, or will that likely be too small? Are there downfalls of riding a smaller frame and having a fairly tall seat-post and steer-tube?