Let me put my 2 cents in regarding the HD package. I have a plain jane LR. Thats it.
Im a flat lander - no mountain trails for me. All I know and have ever known is mud clay and sand - wet and dry. I know how to deal with them. I also know how important tries and tire pressure is. (forgot to mention a winch and dyneema line and anchor)
I have had a 65 Defender (broke real axles like pretzels) and a 63 Willys wagon. Both had a low transfer case. (LR4 has just a clutch pack)
I personally dont think a HD is a killer for the truck - (maybe better resale. I can do most nearly anything in a non HD version - Did the sames things in the 65 and 63. If I was going to launch a boat on a steep ramp or do rock climbing it would be helpful I think
Perhaps I am more conservative in my approach to off roading - if it looks like I might not make it - I find another way around of just do do it... Trust me I have been stuck many times and a low range gear did not help or only made it worse. once you loose traction and momentum thats it.
I guess what im saying is that if you not a crazed "screw it lets see what it will do" kind of driver - you will be fine without the HD. Learn how to drive and use the proper tools and common sense - you will be fine....
Tires and air pressure - repeat tires and air pressure....!!
Oh almost forgot - I ran a 74 Type 4 VW bus with Gates Commandos - It was supernatural what I did with that bus... if it was a syncro... OMG
My style of off roading - notice all the type pf vehicles -