If raising the saddle could deliver a proper fit, Jamis would not have offered that bike in 6 different frame sizes. A taller person doesn't only have longer legs, torso length and arm length would also be different. A larger frame grows in more than the length of the seat tube. The top tube is also longer as is the head tube so that the handlebars are both farther away from the saddle as well as being higher to accommodate the higher saddle needed by a taller rider. A 50 cm frame would only fit a taller rider if the frame had the newer style sloping top tube along with a top tube length designed for a taller rider. The Aurora is a touring bike designed for comfort during very long rides. If your rides are relatively short you might never notice discomfort that would happen after 4-5 hours in the saddle