I don't see a warm hat on the list? I wouldn't go to the Sierra without one. Something like the SmartWool light balaclava.
What are your thoughts about which clothing would stay safely in the pack to stay dry if you get a serious storm, or would you be willing to wear any of it and take the risk of getting it all wet? I carry more warmth/water-proofs than the clothing on your list for a summer high Sierra trip.
Big long-duration storms are unusual, but they do occur - you need to decide whether you want to be prepared for that or take your chances. I'm old and conservative, and I've encountered a couple of severe >24 hour Sierra storms, and I personally don't cut that corner.
You know what your tolerance for being cool is, and whether you plan to limit your campsites to low altitude. I prefer to avoid the bears and camp as high as possible, usually 10K to 11.5K';, which means night temps in the 30s. I wouldn't happily sit through dinner in silk long-johns and no hat :) IceBreaker wool-150 long johhns are significantly warmer than silk and not too much heavier.
Also, July mosquitoes can be bad, so be prepared for that.
Have a terrific trip. Amy