First, I'd determine if the steering is causing the car to jack itself up. My point that I've been trying to make is that if the steering toe is off bad enough, you might be able to have NO tension on the torsion bars and still have it sit high with positive camber. Iam not lying when I write that the forces of the steering are very strong.
To set a baseline ride height, you might want to remove a tie rod end from one side. Easy job, you need only a pair of pliers to remove the cotter pin, a 3/4" socket for the castle nut and a pickle fork and hammer. With the steering disconnected this way, it will not affect the ride height. The steering cannot bind anything so you are free to adjust the torsion bar anchors to get the height that you want. I always bounce the car a few times after adjustment to settle the suspension, That OR I just drive the car a little. I have done numerous "eyeball" alignments over the years and am either really lucky or reasonable competent. I always take the car to an alignment shop to finish up.
***** Remember that if the ride height changes much after driving, there is something wrong with the alignment. A 1/8"to 1/4" change is normal but if the camber changes and the car is jacked up or squatted lower, something is out of order.