So glad you asked this question of this particular quilt! I'm just delving into machine quilting myself because I have a 2 color hunter's star that I need to get done quickly. I'm working on another now to try to hone the skill of simple straight line quilting so I can (hopefully) move onto the hunter's star next.
And Sephie - your suggestion #1 is exactly what I'm planning to do for mine in opposing thread colors. That you for the visual!