Nice bike for cheap, congratulation with it.
I am entering in pretty late on this thread, but I have to row up with Delta, he has a point. The CB500 K and the CB550 K are both great bikes to ride. I have had MANY CB500/550 K's and MANY CB750's. Depending where to ride, I defenitely would prefere the CB500/550 K's on the winding roads, so nimble and good balance. More than enough power. The CB750 is a great bike, but not a great bike on the windings roads. You have to press it down in the curbs and work it up agian. MC Journalists at that time had the same conclutions. I am 183 cm high and weight 82 kg. Seating position for long rides is comfortable on a CB750, but when it comes to fun riding, I would choose the CB550. The bike is not as heavy as the CB750 and more power/ccm. Just try them.