I have a warn semi hide front bumper (steel) with an EVO VR 10S winch, full skids all the way to the gas tank (aluminum) SSO sliders (steel) and a victory rear bumper and tire carrier (steel). On stock springs, it was pretty bad. Everything was sagging and loose. I went to an icon stage 3 and that helped a lot, but the rear springs were still a bit under load and saggy, so I'm adding the icon overland springs to the rear in 2 weeks. The front is great, no dip anymore and I can fit 33s with no issues at all. If you are going to go steel everything though, you are going to be around 200lbs over what I'm at before all the gear and I think you're talking some serious spring rate at that point. What you may want to consider are helper bags instead since I imagine you wont be fully loaded all the time. Firestone makes helper bags for the t4r and they are only around $150. I have a pair installed currently but haven't had to air them up yet because it's cold and dammit I'm a big baby that doesn't like to camp in the cold.