You can substute the stock 650lbs 13.5" spring on the Icons with a King 14" 700lbs 14" spring which will allow you to have less preload at the same height
I just put my numbers in as per your request. At this point everything is stock and, to be honest, I have no idea what to measure for the other areas.
Right now, I have $1,800 to spend on a 3" suspension lift. But, I can throw in a few hundred more to get the right products.
I don't do much off-roading at this point in time. I never wanted to cause any damage to my truck since it's my daily driving vehicle; therefore, I was hoping with this 3" suspension lift I could start doing more.