What rear shocks for 4-5" rear drop?

[bigmoe]

I've done 3" drop spindles and Jeep Wrangler rear springs which are a 4 or 5" drop from what I understand. I put in a frame notch. I've installed some rear shock relocators.
I did some measuring for shocks. If I lift up on the frame until the wheels just about come off the floor the extended shock length would be 18 1/4". If the axle came right up to the snubbers (which it probably won't), the compressed length would be 10 1/4". I grabbed an old rear shock and measured 19 1/2" - 12". I'm wondering if stock shocks would work? This truck will never haul a load. What's ideal for a shock, longer than actual travel length (18 1/4") and shorter than the actual compressed distance ( 10 1/4")?