Here's another vote for finding someone who will hand quilt this beauty. Machine quilting will get the job accomplished quickly but my thinking is that a vintage quilt should be completed with the same techniques that the original quilter would have used. This GFG was hand-pieced, I understand, so it seems to follow suit that it would then have been hand quilted. You have found a treasure. Congratulations!
I love hand quilting these old quilt tops and putting my hands where others have been, constructing the tops with such love and care. It lets me appreciate the quilter, her construction and the fabrics she used.