Thanks for the suggestions. I'll have to do a lot of looking... I was interested in this trip on Backpacker.com. http://bp2.trimbleoutdoors.com/ViewTrip.aspx?tripId=247385
Biggest problem is that the nights at that altitude in December can average in the 10's and teens. I'm not sure I've the gear for that. My sleeping bag is a Marmot Pinnacle 15* and my girlfriends is a Montbell Spiral Down Hugger #1 also rated to 15*. We have no problem winter camping, but more in the teens, twenties, and thirties temps. Unfortunately I'm not in the position to buy a Western Mountaineering 0* bag!
The Grand Enchantment looks promising and the weather much more manageable. I'm a relative beginner to long hikes. I've been an outdoors person all my life, but this past summer was my first trip over 10 miles. I hiked the full length of Pictured Rocks National Lakeshore (beautiful by the way). I'm also a newbie to elevation being a lifelong resident of southern Wisconsin. So, there are just some concerns I have about the backpacker.com trip and the grand canyon trip. Maybe have to work up to them.....or in warmer months....
I'd love to hear any other insight!