I agree with Holice. I've never had an issue with W&N and I only hand quilt (except under duress for charity quilts). I've only ever used W&N. I also use 'between' needles - Roxanne, specifically, although I've used others. I also agree about the Americana thread - I love it, although just about any hand quilting thread will work. I've never worked with 'regular' thread to hand quilt. I also use Thread Heaven to condition my thread before stitching.
I think when you wash your completed quilt you will be fine wtih your poking batting. If not you can address after that with the suggestions that others have made.