If the pump sack is big enough to take the place of your dry bag, and you like it for that purpose, ditch the dry bag and the pillow. Use six or seven ziploc bags inside your pump sack for a pillow. Saves you 2.5 oz, and you can inflate your pad easier.
Probably don't need extra shoes, groundsheet, or a headlamp (plenty of tiny led keychain lights that work fine).
Also, the MSR Titan kettle is almost an ounce lighter than your pot (snowpeak, right?), has four oz more capacity, and probably will still hold your stove.
Sorry I can't save you any pounds, but every ounce counts, right?