RE: Backpacking in to hunt . . . or no?
If your dad has been there before, he knows what it will take. You can go pretty light on the way in spliiting the camping gear between two.
I think two of you should be able to get a good sized deer out in one trip, be sure to take some heavy duty bags for theboned meat. You will leave much of the weight behind in the form of guts, bone and hide.
I do think that some meat might get wasted if you each shot a good deer. It might be a good idea to agree ahead of time to quit hunting when one of you shoots one. You could even lighten the load a bit by taking just one gun and a video camera.
It sounds more liike a good trip the more I hear.
Take a lot of pictures and post them up after the trip. I'm looking forward to hearing about your trip however it goes.
Bob