Here, this may help.
http://elkcrazyoutdoors.com/home/pack_list
I can do 7 days with a 42 lb pack including food and essentials. If I were to add in enough food for another 6 days a 1.5 lbs per day that would equal 49.5 lbs. DO YOUR HOMEWORK!
The longest that I have spent is 18 days, but that trip did require advance placement of food and others prior to the season.
Muley brings up a great point, in early season elk hunting haste makes waste. Have a good plan before you go.
Before heading into the Church you might want to call the biologists at the Boise office to see how the elk vs. wolf population is in that area.....good luck and take care of your feet!