Removing the springs is easy. You can use Berner's method if there is not enough weight on the front end. Disconnect the lower ball joint, support the lower a-arm with the floor jack. You may have to remove the backing plate because the lower part of the spindle, around the ball joint, sticks into a slot in the backing plate. Swing the spindle out of the way and lower the jack, jack stand under frame. Once the a-arm is all the way down give the spring a swift kick
, or just grab hold of it and pull it out, it's not under tension. I wrestled with a spring compressor on one side then realized you can pop the spring in and out by hand once the a-arm is all the way down.
EDIT: Maybe it's the a-arm that sticks through the backing plate. Anyway if you're replacing all 4 bushings you can disconnect either ball joint to start with or both.