Just leave the height as it is - whatever your using on the road? Turn up and drive, see how it feels & enjoy the day. How many clicks of damping adjustment do they have, and what do you have it set at for the road?
Personally I always recomend to add a little each time, either a touch more drop or a touch more camber each time you do another day, so you find what works and what doesnt, this way you learn with your experience, rather than say dialling in -3 neg camber and think you are a driving god straight away. You dont mention a camber kit so this is just an example.