It's a beautiful quilt....you know borders are always a hard thing to decide on...but if it were me..I would choose a dark blue inner small borer and then choose one of the medium florals that you like for a bigger outer border.
as far as quilting..well that is always subjective as well....I think if it were mine I would do some feathers that follow the lines of the hearts ..and then do some fill in work around that...then I would finish it off with a feathered outer border.
:thumbup: