I knew you lovely blogging buddies could help and I thank you from my heart, for helping me decide how to quilt my latest quilt. The consensus was to echo quilt the vines and flowers and cross-hatch or stitch-in-the-ditch the coin stack. After reading your comments I felt confident enough to give echo-quilting a try - for the first time. I was surprised at how easy it was to do, using the edge of the foot as a guide.
I also decided to stitch-in-the-ditch as I wanted the quilting to be fairly simple. I'm pleased with the result - I also added some buttons to give the flowers a little more effect.
Thank you all for your suggestions, you really are a helpful group of wonderful people.