Go for the crown. High ceilings beg for it. And that tray ceiling in the
dining room,put it there too. Like the other guy said, if your ceilings are
high enough, go for massive multiple piece crown. I did some seven piece
crown a few years ago. In the try ceiling you might want to use something
smaller. You can even pull it down and run rope lighting inside the crown
(if you can get a wire to it.). Check out some crowns here:
http://www.wholesalehardwoodint.com There are at least three pages there.