Sheep Farmer, sorry you've had so much ripping! Don't get discouraged!
costumegirl, don't start worrying about matching points now, lol. Just be as accurate as you can with your cutting and sewing, and it will all fall into place. I would suggest you sew and test just a few of the tri-recs units to make sure they are coming out right. Those are persnickety units if you use the tri-recs tool.
You're really in the driver's seat, starting this after seeing so many finished ones (especially if you follow the Quiltville page). It looks less busy with a lower contrast between the lavender and purple, and of course, with quieter, more consistent neutrals.