A couple of other suggestions;
Buy an LED headlamp...I bought my first one about 3 years ago and it is the THE most useful thing I've bought for hiking in years...I can't believe how useful they are...since I bought my first one, I have bought one to keep in my jeep, one in my wing, one in my toolbox and one on my workbench.
Also, get some poly-pro undergarments, especially if you're going to be out in the cold....remember this, cotton kills. Wet cotton will wick away all your body heat causing hyperthermia...polypro underwear (and other clothing)won't...it dries quickly and keep you warm when it is chilly and cool when it is hot out...I started using it about 5 years ago, moving away from wool and what difference...there are different thicknesses for different temps.
Just my .02
....and oh, I used down bags for 20+ years...I am now using only synthetics...they clean easier, they are half (at least) the price for a given temp rating and they last at least as long, usually longer. They may weigh a bit more ,all things being equal, but overall they are alot easier to care for and although I was a "down-snob" for years and years, I've finally been enlightened....I still can't let go of one of my down jackets though....
OOPs saw that CJ recommended the headlamp already......yeah, what he said!