Your flower print is beautiful and you could pull the colors from that focus fabric to pick out your scrappy fabrics for the stars, flying geese, HSTs, etcetera. I would consider a Kona Snow (not a bright white) for your background. To me, the peach does not provide enough contrast to all that is going on in the borders. However, if you already have the peach in your stash and you have enough of it, you could wait until you get to the last outer border where, in the TQS version of it, there is the same fabric as the focus fabric in the setting triangles of the medallion and see whether the peach or the focus fabric looks best in the outer border.
I, too, saw the one Sue Garman posted on her blog in May of this year and I'm hoping to go with more muted tones, as Sue did. Haven't found my focus fabric yet, and I believe it will all hinge on that.