Some thoughts: if you want to take off-road I think most folks on this site will tell you you want the 18" wheels to give you better tire choice (really any tire choice). This will force a review of $600 in rims against HSE upgrades. I got a 2008 LR3 HSE w/ 70k miles for I think $21k. I've had for almost 9 months and I love it. Gas mileage sucks; if that concerns you along with putting in super gas get something else. It's a beast. I'm replacing rims as I must replace tires anyway (Note getting BFG at ko2s) and taking off-road this summer.
The truck is not for the faint of heart, but every item I found wrong with it (misc warning issues, bottoming out overnight, coolant sensor fault, tire fault, air leaks) I was able to diagnosis using this site and fixed most myself for what 1 trip to dealer would have cost.
It's a great vehicle to drive, 4 sit like kings and the trucks drives great on the highway or the city. My added Johnson rods which I bought used for $80 and installed in 15 minutes give me a nice lift on the road.
Good luck