Get your permit for the trailhead and at the ranger office per wilderness area They do want to know your loosely projected itinerary, but you're not held to it. If you are starting on the east side, get one from an Inyo ranger station, even if you plan to cross into Yosemite. If starting in Tuolumne, get a Yosemite permit, etc. I did the Minaret Creek, Ediza, Garnet, Thousand Island loop from Silver Lake with side trips to Davis Lakes, Alger Lakes, Koip Peak, Lake Catherine, Nydiver. Phenomenal.