I never got my LR4 to sell it after 4-5 years, otherwise I would not have bought it. I sincerely expect to keep it indefinitely. It will have very few miles, so I can see having it for 20 years.
But even if it is "just" 10 years, I bet it would be worth a decent amount as a late model, fully-spec'd, low mileage V8 LR4.
Quijote: If you choose to sell your truck after 10 years, I will be there to buy it. I imagine that the interior stills smells new, you are a lucky man..
Mike