I would put several color catchers in and use cold water when washing it the first time. (I alway use cold water on quilts to keep colors bright). If you get some run anyway, soak quilt in OxyClean to help remove the color from the white. You can test some of the batik scraps to see how much they run. You can include a piece of white to see if it picks it up. I test fabrics in my washbowl before washing them to make sure they don't really lose a lot of color. There are also two products you can buy either online or at a quilt store: Synthrapol and Retayne.
Beautiful quilt! Can't add much to what the others are saying.