The body will have some roll just from the torque alone. If the car is driving straight I would not make an adjustment just due to looking at a picture. You want the car to launch straight without having to correct the steering.
If the car does want to move in one direction, 1/4" is WAAYY to much. If the car makes a noticeable move, 2 rounds of pre-load is plenty. I never measure the distance, I go by rounds on the adjuster.
This year a friend started logging shock travel. Even with a 25.2 chassis and the largest TRZ anti-roll bar, the car still has 1/2 more of shock travel on the left than it does the right. The chassis will have body roll......so adjust for driving characteristics, not because of what you see in a picture.
I have a crappy video of my car from Sat night. 1.30' 5.19 at 144.2. If I can find a way to get it from the camcorder to internet I'll post it. I had someone video the rear tire so I could watch seperation and wrinkle.