Rubicon, yes.
Stock, no...it has street tires.
The biggest obstacle is traction. There are some rock trails, like rock gardens, so a lift or skids would be advised if that's your thing.
Mostly, it's trails from one scenic area or playground to another. As previously stated, it's kinda like Rausch Creek...just bigger.
I don't know what 1-5 represents, but I can't see having any issue draggin' my 2"-31"ATs WJ through everything I came across, except mud. I don't do mud. And, I don't have to try everything.
BTW, count me in. How do I pay and what if I have a passenger by then but not yet?