You have a lot of research to do. Simply adding a small lift does not offset extra weight we’ve all added to our vehicles. Instead of looking for a “lift” be looking for upgraded spring rates. The Australians get it right, as there is Old Man Emu, Dobinson, and a couple others that market not “lifts” but suspension upgrades. If you have an additional 400 lbs at each axle, then you need a spring designed to support that extra weight. Spend a thousand or so for an Aussie kit complete with gas shocks. I gotta say, my OME kit has done well for over 200,000 miles. I just replaced the first OME shocks two years, or 30,000 miles ago. The old one were still good, I just did it as a PM. Finally, keep it simple . Those reservoir shocks are cool and I’m sure they work really well, but does one really want to be rebuilding them every 50,000 miles or so? Just my 02cents based upon nearly 35 years of doing this thing that is now named overlanding.