On the topic of boots, you really don't need to buy an insulated boot for the time of year you will be hunting. An uninsulated boot will keep your feet from over-heating if it ends up being warm outside, and if it is cold a good pair of wool socks will give you all the insulation you need. Especially if you're doing spot-and-stalk hunting. I even wear my uninsulated boots on late season cow elk hunts in November. A boot with 400g of insulation will work fine too, so long as you wear a thin pair of quality moisture-wicking socks if it is hot out. Also, if you are going to be walking in a rocky area, wear whichever pair of boots has the stiffest soles and most support. Boots with soft soles will kill your feet after a day of walking in the rocks.

As for the extra survival knife, it is not necessary. You should be able to survive with a pocket knife as your only blade if you get in a pinch.

I doubt you'll need a set of chains that time of year, but if you have them and like the extra comfort of mind they'll give you if you are on sloppy roads, then by all means throw them in the back of your truck. If you don't already own a pair, the money is probably better spent on all of the gas that it will take you to get out here.

One thing I haven't seen mentioned yet is a game saw (could be because I haven't read all of the posts). If you prefer to split the pelvis when you're field dressing, a compact game saw will save you a lot of work and eliminate the possibilty of slipping and cutting yourself. You may find that splitting a mulie's pelvis with a knife is harder than doing it to a whitetail. My personal favorite is the Rocky Mountain Pac-Saw.