Make the Teriyaki Sauce once, Sunday — one 1½-cup batch splits evenly to marinate and glaze the chicken thighs (¾ cup) and glaze the salmon (¾ cup). The soy, mirin, honey, and sake quantities below are sized for that one batch, not two separate ones.
Salmon and flank steak each appear in two dinners — make sure your butcher counter order covers both. And get ahead of the make-aheads: freeze the mango for the sherbet a day or two out (or just grab a bag of frozen chunks), and bake the matcha cheesecake at least a day before you want to serve it.