The proper way to adjust a threaded coil-over suspension involves using a set of scales. The whole idea of this type of suspension adjustability is to equal out the loads on tires (or bias them for circle track) for cornering ability. The fact that you can lower the car with them is just an added benefit but it is NOT their primary function. You should be aware that you can hurt the performance of your car if you don't adjust them at least reasonably close. At best, the car may not corner as well as it used to.

At worst, you may change the handling to the point of being dangerous. This sounds like an exageration but with a threaded setup you could load the front right and the left rear tires and create a car that turns left really well, but won't turn right worth a damn. Even, possibly, spinning out. All this with the car sitting perfectly level. You have the suspension, now take the time to set it up right. Find a tire shop with some corner scales and work with them to adjust tire loading and ride height. The object is to get the cross weights (diagonal weights) even. It's not as important to get the other weights even. It's the cross weights that will sneak up on you.