Out of all the big game in North America, I think bears are the animal that most people disagree on which equipment to use. This year my son and I used 2 270 Wins to kill 4 bears. Most likely we’ll be packing 270s again this next year.
I think you should save your money and skip the winch and skid plates. Considering your lack of experience with snow, I think you best plan of action is to use 4wd until you get stuck, then throw your chains on to get unstuck. Add a come along and shovel and you should be able to get out of 99%...