I was waiting for a question in there somewhere I would compare spring rates and see which one is stiffer and chose from your preference. Shocks used will make a big difference. I dont remember if those kits come with new ones or not.
those kits only come with 4 springs, i think they are supposed to be about 30% stiffer then stock, and 1 inch in rear, and two inches in front taller then stock. if you go with ironman or bds, i would get new shocks.
im not a shock expert, but i would get ones that are least 1 inch longer all the way around, or id prefer the same lift on the shocks as the springs, as in 2 inch longer spings, two inch longer shocks, and so on.