I seem to like 112 1/2" blocks for the most convenient place in the majority of my quilts. However 12 1/2" blocks are not always practical when building the perfect quilt. This quilt sounds like it will do with the original size of 11" square. Placing a border around the entire quilt top may add to the over all finish. Setting those triangles is not as difficult as it sound. Having those hearts on point will be stunning.