The great upgrade debate:
The reason all these widgets, toys, lifts, tucks and shocks exist is because the base vehicle doesn't do what this or that owner wants it to.
Your LR was perhaps designed for farmer Brown and his bale of hay, but it was designed as a complete system.
OK there are tons of compromises made in the name of economy but adding stiffer this, or faster that only transfers the load to another part of the ensemble.
The max load of any P/LG is way beyond its long term running load, travel light, fit new OE shocks and take the old ones as spares.
If you blow the new ones you're driving too hard for an overland trip and the rest of the vehicle is also suffering.
Only HGVs are designed for full load full time, and even then the driver behaviour accounts a lot for the life of a vehicle.
All IMHO of course but I spend a lot of time farting aroung dimensioning bits of cars for the "average" or "target" user.