IDEAL LOWERING HEIGHT

[Flying Finn]

I bought a lowering kit for my Gen 2 Busa from America.
This particular kit has up to 4 inch lowering capacity.
Now my question is,how low I can go,without compromising normal ride ability?
When I go to drag strip,I can probably go all the way down to 3,or 4 inches,but then it would probably be a pig to ride on public roads?
Have you lowered your busa,if so,how much and how will she behave after that?
Any feedback appreciated.