This is gorgeous! The HOURS of work in this thing- wow! I am jealous. I can see that you treasure it, though, so I won't be tooooo jealous. ;0)
I agree with the others- I don't think I would use spray baste and I would probably hand quilt it, too. It would be something to do in front of the tv and it could take as long as you want. It's such a treasure and the hand quilting would add to it.