Because you have already put so much work into this quilt with all the appliqué (my opinion only-not experience) I think you should quilt around the appliqué. It makes it stand out so much better. By just stopping at the end of the crosshatching, it will look like that area was “missed”. (1” gaps everywhere).
As I said, you have already put so much work into the quilt, you should not skimp on the quilting. This will be a fabulous heirloom when you have finished it.