i can't tell which blocks you're talking about so i moved this to Main where more people will see it. you'll get more advice that way.
you can use the rotary instructions to cut out your pieces and still stitch them by hand. if you plan to draw the stitching lines, neither method will add or reduce the amount of time your project will take. (come to think of it, that's also true even if you don't plan to draw stitching lines.)