Wow what a lovely quilt!! Love your colors. If that were my quilt I would definitely do custom machine quilting. Easy enough to say since I am a longarmer and I can do my own quilting. Feathers, continuous curves..crosshatching...multiple fillers..would be gorgeous, however, very expensive to send out for quilting. A pretty panto would also serve this quilt, creating beautiful texture all over. What size is it? Looks huge!
Great job.