I apologize in advance for being "that guy" who is a downer, but I recommend carrying your food in with you at the beginning of your hunt instead of caching it in advance.
A few days worth of freeze-dried meals isn't that much weight... if you can't get your gear into camp, how can you realistically get your elk meat out?
I've seen too much crap left in the woods by well-intentioned people who have a change of plans or a change of heart and abandon gear/food, etc in the woods. Especially if you are coming in from out-of-state, stuff happens, plans change, and then your cache is just extra junk in the woods that tarnishes the wilderness experience for others.
If your hunting spot is too far in to pack your gear efficiently, a good option would be to hire a horse packer to drop your camp in your hunting area and then pick it up after your hunt... that way you could eat a lot better than freeze-dried and get your meat out of the woods promptly.