I think I've read every post so far and there's actually some really valuable information if you mine through the ribbing; some deserved and some because that's the culture of this site. I think t_carlson gave you a huge piece of information so run with that. I am going to give you the best piece of elk hunting advice that I have and you can take that and what he gave you and go from there; be willing to do what no one else is willing to do (or at least what you think they aren't). That is going to reshape your mentality around terrain and grizzly country but we will get to that.
I'm in Wyoming and never hunted Montana elk but I have found most people aren't willing to pack a certain distance in, or drop x amount of elevation knowing they have to pack a dead one back up. Look at maps, look at areas from the road. I found my most productive spot from seeing it from 6 miles away and seeing the topography and checked a map and no roads then packed in and was in elk day 1. Some of that is luck and some is knowing there are elk there; and that is a general WY unit. Look at maps you are interested in, see the nasty contour lines, see the limited access and get in there and see. I believe the hardest thing I have ever done is pack out a mature bull alone with 2k of steep elevation gain but I had a plan and the mental fortitude to get that done so work on that part, it won't be easy as someone stated above...make sure everyone in your group has the same view.
As far as bears go, just do everything right. I hang food downwind of camp and zero cooking or snacks in the tent and wrappers and trash don't stay in the pack. There are a lot of guys on here with way more grizz country experience but I spend a fair amount of time every year in grizzly country and I don't lose sleep when I know I have done everything I can. In the field, read the bear. I've had boars at 20 yards and didn't reach for my .44, just don't overreact. If getting a fence helps you be ok in those areas do it. Get out in areas that look good, sign from last year will still be there to give you an idea if you're on the right track. I'm headed to MT this week to scout, ya it is a pain driving 8 hours but I'm really excited about it. Make it a fun thing, pack light and camp in an area.
One last thing that I'm sure you know is elk shape is a real thing. People talk sheep shape and I agree, those are hard days. I start working on being in September elk archery shape on October 1st.
Send me a pic of your Montana bull when you get one...