You should visit this thread:
**Rear Coil Spring Discussion - The Perfect 3rd Gen Rear Spring**
All depends how much weight you want to carry and how high you want the rear to sit. I still think there is a hole in the market for rear springs - I'd kill for a slinky long travel rear spring that has OME 890 load capacity but sits at 2"-2.5" of lift.
I've had LC 7, 8, 9 wraps. My last truck was about 4" lift with 7 wraps unloaded with a light drawer setup, fridge slide, and Eimkeith rear bumper. It would squat 0.5-0.75" with the cargo area loaded for a weekend of camping.