I asked some questions about making a down quilt this past winter but ended up shelving the project, mostly because I fell in love with my new Feathered Friends bag and didn't want to make it jealous... But I have a hike with my son coming up in November and it'll be a good excuse to finally make one. He's been carrying an REI Subkilo for these hikes but I'd like to lighten him up, hopefully by as much as a pound. My son and I are about the same size.
I have a couple of final questions:
I'm 5'2", planning for the quilt to be about 5'6" - would that be about right? About how much (%) should I add to compensate for the loss in length to baffles? I'm planning on 1.5" baffles. I'll be sewing in a baffled footbox.
I'm also trying to decide on how much down. Aiming for a 30* setup with light/mid-weight baselayers and a women's ProLite. I've read as little as 5-6oz of down but I'm thinking more like 9oz (of 800+ fill)? My son is thinner than I am and will be able to wrap himself completely with the quilt if necessary (i.e. like a bag.) He will also have a down sweater or nano puff to supplement if necessary. That said, I'd rather be an ounce too warm than too cold.
Thanks for your help!