I ain't reading through this whole thing. Best advice I can give is don't be dumb! Don't take unnecessary risks (like walking thru thick brush). Stay in open areas best you can. Be aware of your surroundings at all times. Carry spray. Carry pistol. Repeat be aware of your surroundings dont...
I've had a kelty 15 degree forever. Never been cold in it. For the price I think they are the best option unless you are gonna go ham and buy expensive.