I would start with the lower bars level to slightly down, but you really need to plot out the points of the brackets. I have a CAD file of mine and know exactly where mine is with any change. If you don't have those tools accessable to you, plot it on paper, full size on the floor beside the car taking accurate measurements. You will know better on settings after you get some front/rear weights to establish a center of gravity of the car. Also, what is the wheelbase? These items all make a difference. Mine was happy after making one adjustment to the instant center. Good luck with your suspension tuning.