Even in the tropical paradise if Vancouver Island compared with the frozen wastelands of Alberta, in January here, I can go through 100AH a day just for the furnace at 35F outside. Never mind a bunch more AH for the other stuff.
With six batteries I need a 50-90 recharge on the second day. (In the woods no solar, and besides even in the open it is dark and cloudy then.) With no generator howinheck can I do that 50-90 and keep on camping for another two days? I like to do four days to make the trip worthwhile.
Anyway, I wish the OP would hurry up and do his four day trip and see for himself what is needed.