Why not use the the 2" coil replacement kit instead and you can go higher later if you want. Just a thought. I was in the same postion you were and chose the coil repalcement and new shocks. You can get new springs and new Pro Comp MX6 adjustable shocks for $356.00 for 4wdh.com right now.
The MX6 shocks ride much better than the ES 3000 or Ranchos.
Just my 2cents