Have you tried packing this gear and hiking with it. That pad is huge for a backpack - will you have any room for your other gear.
Backpacking while hunting is always heavy. It's cold and you've got all the extra gear for hunting - most of it made of steel and other heavy metal. What kind of terrain do you anticipate? Will there be snow (that's miserable to hike through and every extra pound feels like five)? How far to you plan on hiking to get away from other hunters?
In addition to a few trial runs with your sleeping/shelter setups, I'd definitely recommend a trial run with all your gear in the packs.