Rear springs on the 2017 F250's. That's it, add spring or air bags, and a sway bar and you're GTG. But I don't like a SRW truck to weigh over 10,000 anyways. I prefer campers that weigh less than 2300#. (Half ton rated slide-ins, LOLz.) 3000+, I want a DRW.
Any current 4wd crew diesel HD truck, 2500 or 3500, is going to weigh right around 8000# off the showroom floor. My Ram 3500 SRW has a factory GVW of 11700. The long bed same configuration is 11900. I think you are being really conservative with todays trucks. If we were talking a 2000 model truck, sure. The DRWs of that day only had GVWRs of about 10500. But todays trucks can weigh considerably more than 10k and drive easily, safely, and comfortably.