...I am a bit confused by the weights, as worsted seems a bit thinner but I have adapted...
As far as I knew worsted is 10ply and double knit (DK) is 8ply.
yes that's the gauge I use
we do have soft acrylics here in the UK thank goodness, as although I spin /knit for others in wool I can't wear it myself as I come out on a rash!
I knit / crochet lots of throws / blankets in lovely soft acrylics, which wash and wear well.
I must try this spiral pattern sometime soon, as it looks so lovely