I'm a few inches taller at 5'6"/165cm, but my legs are quite short (I make up for this by being pretty wide).
Whereas I was nearly
able to get away with the bike in standard trim I found it hard to reverse-park and hence bit the bullet and had the suspension modded to lower the bike by approx 20mm.
The suspension guy pulled apart the front forks and did something to remove the top 20mm of travel. While he was in there he also revalved the shocks. He did the same to the rear, dropped it by 20mm and revalved the rear shock. The net result isn't that noticeable, especially after I had the sidestand shortened by the same amount, and now the bike is at a point where I can get the balls of each foot on the ground at once. Much better.
As an added benefit the handling is much
improved over the standard valving, no pogo-ing, no dive under hard braking and no squat under acceleration.
I have a female friend that just had
to have a 2006 ZX-6R. Alas she's just on 5' tall (and all curves
) and she had to have her new 6R lowered by 50-odd mm by the same method. Now she has the bike of her dreams, but she has to watch out for potholes and speed bumps otherwise the bike will bottom-out. It is noticably lower...actually it looks a bit odd
I haven't looked at the seat, there doesn't seem to be a great deal of meat in there to play with and my aging bottom needs all the padding it can get...
...the suspension work is not that cheap though