Gearing and highway speeds?

[SL70_imp]

So I have test ridden the CB11 and really liked it, didn't get to spend much time at higher freeway speeds though. How do you like the 5 speed and the final gear ratio, is it relaxed at 65-70, or is it revving kind of high? Any buzziness/vibration issues?
I would want this bike to do everything from short trips around town to the once or twice a year week long tour.