I was thinking of a 1oz/yd nylon ripstop with a single IX layer 1 oz/yd and a flannel interior lining at 1.75 oz/yd to build a summer bag for a late August Susqeuhannock Trail System (STS) hike. Just need a little something that is small and lite. Anyone try this type of contraption? Any better ideas? This would come in around sub one pound.