I noticed in you first posts you have your game processed. Do it yourself and save a couple of hundred $$$ and you'll get better quality meat! I take a 5 cu ft freezer with me on deer and antelope hunts, a 10 cu ft when we expect to get 3 or 4 animals or a couple of elk. Run it with a small generator. Usually on a weeklong hunt I can run the thing on less than 5 gallons of fuel.
Butchering is not very difficult, I've been doing my own meat since I was about 20.
That's an awesome idea, I've never thought about hauling a freezer with me. They are not that big either doing a quick search and all. Good idea CC!