OK. Hammock done. Suspension done. On to the underquilt. My two biggest objectives for my DIY hammock system are cost and weight (in that order). I really would like to do a down UQ because of the weight savings. I saw that thru-hiker sells 900 fill down for $30 per 3oz. I really want to make it work with the 3 oz of down because I don't want to spend an extra $30. I am only making a torso sized UQ (I am thinking 42" x 46") for summer and shoulder seasons, something in the range of 45 to 50 degrees. How much loft should I expect out of 3 oz? Will it get me to that temperature range, or should I bite the bullet and get 6 oz? Also, is the Nobul1 a suitable fabric for the UQ? Thanks again.