The OME springs is what gives it it's lift. They are taller then stock springs so you wouldn't need the spacer lift if you get the OME springs. I'm not sure what shocks would work with the taller springs but I'm sure someone here does. Nice looking Commander you got there!
2006 Jeep Commander, 5.7 Hemi, OME 2" HD Lift,Robby spacers,New and improved Jeepin by AL UCA,265/70/17 Fierce Attitude on XD Spy 17x8 with +18 offset,Magnaflow Cat Back,4xGaurd Matrix w/hoop,Mopar Chrome side steps, Chrome door handles,Chrome Fuel door,Chrome Jeep bug deflector,AVS window vents,Home made roof lightbar, 2009 Mygig with lockpick,Backup camera.