Don't think you are missing much, just personal preferences. Instead of a USMC fleece hat, definately go with a USN wool watch cap... haha j/k. Leatherman is handy, but I'm going with a simple swiss army knife. The knife also could replace the toenail clippers. One thing i didn't see was a guide book like the AWOL. A sponge (cut 1/4) with the scrapey side, forget what they are called (to help clean the pot), but not sure if you actually add food to the jetboil pot.
I am starting on June 14th, and my concern is i will have too much cold weather gear, you may have the same issue. The 15 degree bag is overkill but just open as a quilt and you should be fine. I'm still debating one a resupply just prior to the Whites so i don't have to carry the cold weather stuff through the HMW. Maine should warm, rainy and buggy and we should only hit cold weather in elevation, so i'm flip-flopping on gear still. good luck.