That's beautiful. I've done one king sized quilt. I think it was a tad bigger than that. I quilting it myself on my trusty ofd Bernina, but had to use Marti Mitchell's Quilt in Sections technique. I had enough trouble getting the sections thru that tiny throat space. I never would have made it with the whole quilt.
I'm actually getting ready to make another one for the bed, but it will be easier to quilt since I have the Juki with much larger throat space.