Yes, you are correct, feed dogs down (some people free motion with them up, but it is much harder to guide that way).
I use quilters gloves too. My hands don't slide and I get a better grip on the fabric that way.
I use a quilting needle size 75/11.
Yes, for straight stitching, use the walking foot with the feed dogs up.
Practice a few times first. It really is easier than you may think. Hope this helps.
And, WELCOME!