He's my suggestion on the subject, at least for easterners heading out west. Do whatever you have to do to slot TWO weeks for a trip like that. THREE would be better if you can work that out. Most working type people usually can't.
You can chew the heck out of ONE week just driving out, and back, setting up a good camp, and getting a decent understanding of the lay of the land you're going to hunt.
You'll already have bought your tag, the cost of gas will already be covered, and another weeks food will be your only extra cost.
One week just is not long enough, in my opinion, but if that's all you have, that's all you have. But you're gonna want that extra week when you see how fast it goes.