I had to choose #2 because I have four salad plates in that same pattern.
Number four for sure! Poinsettias look fabulous with the blue and are so easy to care for. Love a pop of deep red with blue!
I love octagonal shaped plates. Growing up, my mother had a set of prewar Haviland china given to her by my grandmother. We used them every Thanksgiving and Christmas. They bring back happy memories.