I wonder if on this model, you can remove the spindle from the car without compressing the coil spring. I am only familiar with the W123.
On the W123, I think you can support the car with a jack stand under the lower control arm right under the coil spring. Then remove the spindle.
If this is possible on your model, it could save some shop costs. The only shop costs would be the ball joint extraction, installation and then the allignment.