I have 60 cm lht. FWIW, I have the same inseam. With touring bikes, I agree to go with the larger size you are comfortable with. However, I would pay more attention to Top Tube for fit. Being 6'3" I still had to shorten the stem on the 60cm LHT (It came stock with a 120mm stem - I dropped down to 100 mm). With the lower bottom bracket on the LHT - you have a little more stand over height on the top tube per frame size. For your size needs you listed above - I would go with the 58, and you still may have to adjust your stem down a size. Your head tube will be slightly shorter - leaving you more room to adjust stack height to get the bars at least to seat level for a comfortable more upright position.