I imagine it would be a very tough archery Mule deer hunt. I did a rifle Deer hunt in 2018, was not impressed for the amount of points it took to draw, I saw one buck I wanted to kill but wasnt able to get it done. Would like to hunt it again though, just not for the points it takes. I think you'd need to be prepared to spike out. Some of those deep canyons you aren't going to want to go in and out of everyday. There is some very very rough country. The 65 tags and 15 bulls, is going to be very highly skewed by private ground (just guessing), as is the buck harvest. Not saying it can't be done, but it will be tough. Having said all that there may not be more beautiful country in Oregon, its a heck of a destination hunt. As far as Elk hunting I would be out locating long after dark and early in the AM, then be ready to spike out where the elk are. As far as your buddy if he's not a quitter youll be fine, but if he ain't in shape some of it can get pretty Gnarly.