I believe the best way to maximize your wood is to make the cuts like so: - Take one of your 15×96 boards and cut 6 15×15 shelves. - Take another 15×96 board and cut 4 more 15×15 shelves. Then, use the rest to cut a 32 1/4 side board. - Take yet another 15×96 board and cut another side panel at 32 1/4. This should leave you with approximately 67 1/4 left of plywood for scraps. Now, cut two more boards at 15×15 and then cut them in half at an angle (this will create the angled shelves). Now you should have about 38″ left for scraps that can be used to create recessed shelving and dividers.