When I ordered my Tungsten, I struggled with whether or not to include the ORG. More than anything else, I wanted the Falken tires. (I am not a fan of the Pirelli "green" tires - especially in snow country.) The skid plates are nice to have, but realistically I'm not taking this truck too many places where they'd be needed. Two things made me pass on the group. First, I wanted to keep the LSD. There are entire threads dedicated to the pros/cons of LSD vs. locker - and I'm sure by now you've read a lot about it. People have very strong opinions... As I said, I'm not planning to do any serious off-roading with this truck, and I think of the locker as useful for rock crawling and more serious off-road. I personally think the LSD is more useful for me.
The other thing, and you have to think about this, is the difference in the air suspension. The ORG will limit you to fewer choices. The truck with ORG will effectively be defaulted to Off Road 1 (about 1" above normal ride height). You can raise 1" to what is normally Off Road 2. So the normal ride height is 1" higher with ORG, and you can only raise another inch. Think of it as the NRH (w/ ORG) = OR1 (w/o ORG).
Just my own opinions, for what it's worth. Good luck with your choice!