So I wondering for you guys who does track days, what's your set up?
I remember watching a video this rider with a 07 zx6r, i noticed his forks are about 5mm higher than the top triple... I've always wonder what benefits do you get from this...
Suspension rule 1: Take notes. Note down what settings are where first.
Rule 2: Make only ONE adjustment at a time. Compression OR rebound, front OR rear. Don't change both, you won't know what made the difference.
Rule 3: Make SMALL changes. 1 click or turn at a time.
Rule 4: See rule 1
Now that the first order of business is out of the way.....
IMHO, 5mm is too much for me. I prefer 0mm myself. That is measuring from the tube to the top of the triple (not counting the caps). Rear ride height for me is +3mm static (without me on the bike). This set up helps the bike turn more quickly but is at the expense of a slightly less stable exit. That is where a good steering damper comes in as the front starts to loft.
Chain length will increase or decrease your wheelbase. Shorter chain= shorter wheelbase. As long as your adjuster will allow it. Personally, I like my wheelbase to remain about OEM specs but that varies as I change my sprockets. I'm not at a level where 3-4mm in wheelbase will make a huge difference. I still have braking and left-right transitions to work on.
If you set your mike up EXACTLY like mine (assuming you have an 07-08) then you might love it. You might not. There is no "perfect" set up because no two riders are the same weight and style. Further, your tires are part of your suspension and are an additional variable.
My advice would be to hook up with a suspension vendor at a track day. Usually it will cost you <$50 to work through the day. He or she can do a base line set up and then read your tires and feedback throughout the day and make tweaks here and there. Then refer to rule 1