Dropping a 72 stepper

[chuck3026]

I have a 72 stepside but don't know if the front suspension is original. It has disk brakes and I've already installed the 3" drop springs in the front and flipped the rear leafs to the bottom out back. The back looks nice and low but the front needs to come down more. I want to put in the drop spindles for the front but don't know if I can keep my lowered coils. Will the lowered coils work with the 2" drop spindles? I see that CPP is a preferred vendor for the spindles. Any suggestions? Also, I am wanting to run 20" wheels on the back and 18" in the front. I'm a beginner at this so please go easy on me.