Thanks for the suggestions. I think because of the yardage requirements, it will be Milkweed for the Jenny Cook hand-dyed. But, in going through my stash, I found some beautifully soft bamboo blend sock yarn given to me by a visiting friend, and it is absolutely perfect for Aestlight. Yay for shopping from stash!
But first I have to finish this last design for Fyberspates. It just needs a couple of days of monogamous knitting and it'll be done. Then I can go to work on Milkweed while writing up and editing the pattern.