Good luck, and that's a nice long range rig but I'd make sure you are in shape and capable with the lighter rifle. I hunted the Bob in 2008, saw a decent number of elk and took a nice 6X6 and muley. The next year the wolves moved in (west of Dupuyer) and I hunted 3 more years seeing progressively less elk, none the last year in a week of hunting. I know a lot of locals, and NOBODY was seeking elk. One guy spent 2 weeks on horses, first on the west side of the divide then coming east, and finally shot a 6X6 that was with 2 cows above his camp the last night, the only elk he ever saw the whole trip.
Hunting the Bob these days I'd be prepared to walk, walk, walk. I'd go back to the area for bow as the locals report good elk still during bow but they seem to migrate south earlier now that the wolves are there.
I do the early hunt every year and it gets hard every time there has always been low numbers of elk on the south end of the bob but there used to be some very big bulls but in the last 10 years they have went from 380 bulls to small rags and 300's. I will not be doing the trip this year. I hope you picked a good guide to take you in there are some sh&#y ones in that area I would look at ford creek outfitters travis is a good guy and if you look at there pics on the web site you will see the decline in bull size over the years