I feel when I ride that I am crouched or tucked in too far. I feel I need more reach and my arms are tucked into close.
fwiw... I'm 6 feet even, and generally ride a bike closer to 61 or 62cm. (24 1/2 center to top). A 58cm top tube works pretty well for me, so I am not surprised that the Fuso seems too close.
No harm in experimenting, but it's probably not a bad idea to start looking for something bigger.
Steve in Peoria