Sounds like you are making things waaaaaay too hard. The rear springs are very easy to do, just take your time, and look at things. I've never used a spring compressor on the rear.
I've had the best luck with getting the car up as high as you can on the jackstands, disconnecting the brake line from where it meets the hardline, and taking the bracket off of the fenderwell. Then put a jack under the control arm. Disconnect the swaybar endlink, the shock, and the upper control arm from the spindle. Then I just push down on the lower control arm with my foot while I slide the spring out. I've done about 5 this way, and can change rear springs in about 30 minutes. Wes's car was most recent, and we took his out, cut them, and put them back in in under 45 minutes. If you did the fronts, the rears should be a walk in the park.