As a guide I always have everything needed to hunt and put a ram down wether the client is there or not. I am nowhere near as worried about killing a sheep as I am about my client finishing the hunt. You should really only need to pack for a backpacking trip, along with your rifle, rangefinder, and bullets. Guides know how to take care of their clients, the more stuff you bring along for the hunt the more weight you are carrying and energy you are expensing. It's not a make or break if you bring a stove or spotter it's really just not needed. Hunting sheep isn't usually the hard part of guiding a sheep hunt, it can be much harder to get your client to the sheep in the first place. The more things you bring the slower and less energy you'll have and that just makes it harder on the guide. Also I have never needed to use binos on a tripod for Dall sheep, you'll be surprised how easily they pop out, they are easy to spot, then you just need the spotter to judge the horns. I have had clients who bring their own tents, stoves, and optics that they really like. If they are better than what I have and I think it may make them slightly more comfortable I'll leave my tent, stove, and optics behind but it's pretty rare since a guide already knows what's in store for a hunt and what they have has worked plenty of times before. The best way to be prepared is to be in the best physical shape you can be in and make sure your boots, personal gear, and rifle are squared away, then it's just up to the quality outfit and guide doing what they do best. Bad boots, bad shooting, and bad physical fitness will break more hunts than anything.