Again Wayne, why that location to change out? What makes Idyllwild so special a location to swap anything out? Most NOBO PCTers, IF they do swap anything out or add to or tweak their kits do it at KM and perhaps change again in places like Bridgeport or S Lake Tahoe depending on their exact itinerary.
FWIW historically PCTers have tended to have advanced kits to a lighter wt, know they like LD backpacking, BUT tend to have questions with PCT logistics like snow, fire closures, water logistics, etc, and to some extent kit choices. But a good backpacker is one who is always willing to learn to evolve...NOT someone who is a know it all. SO Fox is asking some questions of the forum. Maybe he's anal about his hike. Many engineers and science oriented types are.
Heck, guess you haven't spent much time on BPL , hey? But so what. If the forum can ease his mind by providing some insight, information, or options why should it bother anyone else...especially when many in this forum have agonized over all manner of gear wts, cooking times/fuel usage, DCF, water availability, BSP and GSMNP regs, bears, rodents, snakes, tents in lean-to's, JMT travel and permit logistics(OMG!), etc