Good list, can't find
Do carry the patch kit. The only hole I put into my NeoAir was self-inflicted about 3/4 the way through the PCT. I had a pen in a pocket and it punched a hole. The patch kit weighs nothing and provided that you can find the hole (a tricky process), it is fairly easy to apply in the field.
I carried that e-lite headlamp. And I liked it. For camping. For hiking at night, I ended up buying a much more powerful headlamp. It is very, very difficult to make any speed with the e-Lite because the beam just wasn't bright enough. And I didn't plan to hike much at night, but I had to at several times to reach the post office to pick up a package, to meet my girlfriend, to avoid the heat of Southern California.
I would carry sleep socks the whole way, but that's me. It does get cold in the Sierra and if you end up being Mr. Slow and Distracted like myself, you would have found yourself finishing in mid-October, experiencing the joys of snow and in the North Cascades, temps that dipped to a robust 9 (nine) degrees.
For what it is worth, I wore pants the whole way...yeah, they were convertible but I rarely used that way. There was a lot of prickly things out in the desert and they prevented me from having to wear so much sunscreen.
Finally, I carried max 5 liters in SoCal (and I was hurting for water on more than one occasion) but generally carried 2 or 3 at the most elsewhere. But it wasn't that hot either when I went through Oregon and Washington.
Finally, depending upon your inclination toward such gizmos, cell phones work fairly well on the PCT...at least mine worked fairly consistently (I use Verizon). There was no coverage for days at a time, but as a check-in-with-the-family-and-I-am-still-alive tool, couldn't beat it.
Good luck and have fun! It's fantastic.