I have not been in that area, so I can not help, but I'm sure some people here have. The only advice I would give is not to take a hybrid anywhere in the wilderness that requires 4 wheel drive. You don't want one of those cars stuck anywhere. They weigh as much as a house so you you can forget about changing tires in a jam.
I would pay extra just to have the peace of mind of a 4 wheeler, but that's just me being on the side of caution. You know what your vehicles can do better than me. Hopefully others will be able to give you a good description of that area, sorry wish i could help you more.