Lovely Dresden top! It depends on how fast a hand quilter you are. I am VERY slow so I would outline stitch inside the yellow center and then around the edge of the plate. I might stitch 1/4 inch inside each blade so I don't have to go over any seams and just run the thread and needle in the sandwich at the narrow end between the blades so I wouldn't have to knot often.
On the sashing I might stitch along the edges and stitch a zig zag pattern in it to match the edge of the Dresden blades. I might even invest in the new zig zag frog painters tape and quilt along the edge. It is about $10 dollars a roll but it could be used again and again if you pin it after the sticky has gone.
OKAY, you asked for my opinion but do what sounds good to YOU.