Thanks for the advice everyone, and for being nitpicky. A few things I decided to change were based on the 40% off golite coupon i caught wind of on gear deals. Pulled the trigger on a Golite 3 season quilt- Long at 27 oz. Much warmer and only 3 ounces heavier than my topbag. I also got the 6 oz umbrella (shade) and the v stakes for $205 delivered. Sweet.
I decided to get the golite stakes after reading lots of quality control issues about the easton stakes heads popping off. I have some Ti hook stakes, but I dont really like them. Very low holding power and they bend easily. The Golites look like a good all around stake.
I ended up using an umbrella for much of the AT due to the ridiculous rain and my Marmot Mica's dysfunction. Having lived in Korea for a while now, it seems umbrellas are also the best defense for sun and snow. Seriously though, seeing everyone walking in the snow with umbrellas is hilarious, but it works.
I think im just going to bite the weight bullet and carry my BA insulated aircore. Laying in bed last night, i had visions of what it would feel like sleeping on foam, followed by the slight improvement of the prolite shorty, and finally the bliss BA provided me for so many nights on the AT. Much more gratifying than 8 ounces off my spreadsheet. I will also carry a 1/8*60*20 thinlite to protect the bottom with help from my backpack.
Regarding the water treatment- I've been sick from untreated water before and so have several of my friends. To me, not treating is not an option. aqua mira definitely seems to be the most popular route, and for good reason. I just hate the idea of waiting for the chemicals to mix and again for them to work. The new Adventurer Opti is reported to have solved the problems of the previous version- improved battery life and better water sensor. Im going to buy it from REI in case it doesn't work out (weight, quality, or practicality), then switch to Aqua Mira or tabs for a sure thing. I priced out those tablets at $100 for the PCT. Pretty good deal, may change my mind before I get the steripen.
Concerning the light, the Aurora is truly night hikeable, great battery life for no spares, uses easy to find AAA's, and I have a lighter headband for it sewn to fit my melon to save weight and bulk. It's good and light enough to stay around indefinitely.
I think the white ursack will serve me best in the long run. Its a lot more weight than the yellow one or some string and a tiny rock sack, but the time and trouble saved in most situations will probably be worth it even if its and eyesore on my spreadsheet. An OP sack could be helpful to keep the mouse droppings off it.
Thanks a ton to everyone for putting forward your opinions and helping me sleep better at night. Ill try to load up my gear list on PDF.