I never had to use a spring compressor on the coils for my truck, I had the spacers, then switched to the KORE leveling kit. I disconnected the top locater arm and sway bar on both sides and use either a jack on one side to twist the other side down or use a four foot prybar (you need a friend) to pry down the suspension.
As for shocks, I highly recommend the Bilstien 5100's.