I definitely understand that an iphone is too major an expense to add at this point, so consider cheaper ways of saving electronic weight: many phones will scan pages onto them, for starters. I'd keep the map separate if I were you. Also, you definitely don't need to take elevation profiles from the guidebook because they're included on the GMC Long Trail map. The other alternative is that if you brought the phone only for "security" reasons and made only 1 call each week, you can lose the charger and save 2 oz.
In terms of the pads, you ought to be fine with the nitelite and thinlight combination, although I'd suggest taking a look at Lawson's CCF pads in place of the thinlite: http://www.backpackinglight.com/cgi-bin/backpackinglight/forums/thread_display.html?forum_thread_id=66681
They might not be ready in time, though, so be careful. By the way, what's the thickness on your thinlight?
With the (very wise) decision to go extra-warm on the sleeping bag, you needn't worry quite so much about the pad--find a lightweight affordable option that meets your comfort level and provides at least a moderate level of insulation.
From the looks of it, you know more about clothing than I. The suggestions you're making sound excellent. It's easy to avoid getting cold hanging around the afternoons by simply continuing a few miles extra to the next shelter.
Unless you've got something to worry about, I'd highly recommend forgetting what time it is and leaving the 1 oz watch at home.
If I were in your position and feeling zealous about weight reduction, I would do the following:
1 Leave at home: the buff, the backup matches, the bivy, toilet paper, towel, knife, shades, stake sack, watch, phone charger, spare socks (maybe), and spare camera battery.
2. Switch to iodine tablets in a ziploc for water treatment, saving 2.5 oz
3. Go from 8 stakes to 5, from 4 bottles to 2
4. Leave the Zpacks food bag, use a light trash bag (not a contractor bag)
That would be going rather hardcore although the adjustments are doable. It would also trim just over 20 ounces, without losing much in the important areas, ie warmth and safety. Also, apart from the fact that iodine is more expensive than Aquamira, they are totally free.