I have done several hikes this summer at an SUL weight. I hike in the mountain of NE Georgia and North Carolina, and during these hot summer months, it isn't too hard to drop a lot of weight. Lately, I have been looking over my list trying to prepare it for a larger range of temperatures. I would like to take it down to 30*, but above freezing, say 35*, would be a nice point as well. Here is a link to what I have so far. Getting some critique on it about things I've undoubtedly missed would be great.
My list currently has a quilt made of 2.5oz Apex that I can wear like a JRB Stealth. According to MLD this insulation may have some difficulties getting down to even 35* though, and I may end up making a down quilt with about 2" of loft to replace this. One thing I think I need on the list is a jacket of some sort to augment this quilt. What are the opinion's out there on the best insulation layer. I'm looking for flexibility through seasons so that I really only need the one item. I will end up making whatever piece I decide on myself, so want to make sure each detail is just right for what I need.
My questions are, do you think a jacket made of the 2.5oz Apex would make my Apex quilt reach these temps, or does anyone have experience with this insulation during colder seasons? Will down save weight over synthetic with this fairly low amount insulation? I know a vest would be easier and lighter, but would a vest be a better option than a jacket? And finally, would a hood on it be worth it?
My current hopes are something along the lines of a Kinsman for synthetic or (with a lot of luck in making it) a down jacket similar to Jamie's newest jacket creation for down. This kinsman pattern doesn't have a hood, so I would have to add one on, but think I could figure it out if it would really help that much.