As long as you have the W & N and don't mind the 'hand' of it, you can preshrink it. Put it in the washer with warm water. Let it soak a few minutes, spin out the water, then dry it on warm. I haven't done W & N because I don't buy it, but I have done several cotton/polys that need a lot closer quilting than W & N. The only one I damaged was the one I forgot and actually washed which means it was agitated twice. Oh, oh. I can use most of it for smaller projects.
I've used Hobbs PolyDown and their 80/20. I liked them both for different reasons. Both were soft ( I preshrunk the 80/20) and both FMQed nicely.