Alright guys I am going to post up what I sent Mike. I assure you that you can go much lighter than what I have up here if you want to.
Here is what ya need to go lightweight and warm.
HAMMOCK
http://www.warbonnetoutdoors.com/gal...m&g2_itemId=49
http://www.warbonnetoutdoors.com/blackbirds.php
I would go with the Warbonnett BlackBird in double layer it is 10oz heavier than a single layer but if you end up going in extreme cold you can add a foam pad between the two layers to help out.
War Bonnett Black Bird double layer 1.1 material (good to 275lbs) 28 ounces
TARP
http://www.warbonnetoutdoors.com/gal...&g2_itemId=142
http://www.warbonnetoutdoors.com/tarps.php
For the tarp you can get a Mambajamba or Superfly 13.5ounces and for nasty stuff add 8oz and get the door panels. You can completely shut yourself in that way.
UNDERQUILT
http://www.hammockgear.com/phoenix-40/ 13.5 OUNCES
TOPQUILT
The top quilt will take the place of your sleeping bag.
http://www.hammockgear.com/burrow-20/ 17.3 ounces
Without using the doors that would put you at 4.5lbs including your sleeping bag. (You can also forego the topquilt and just use your own sleeping bag. If it is going to be nasty add the doors and 1/2 lb and that puts you at 5lbs with sleeping bag. Another cool part of the hammock stuff is that it all packs down super small in sil nylon bags so you can save pack space as well.
That was just an example there are many other combos and things you could do to get that system down to 2-3lbs if you wanted to. A great place for info is
www.hammockforums.net. If you watch the classifieds you can get deals on the gear as well. If you have any questions give me a shout. Scott