I was very surprised too. The Core is supposed to have 1700 ci interior volume, but I assume that this is with the top rolled down and clipped all the way. Also, it came in at about 1.2 oz above the stated weight (without considering the removable waist strap). I brought it down to 7oz by replacing the bungee cord and stops with smaller ones, and replacing the sternum strap with dyneema cord loops and a mitten hook. I will post a picture of the pack once I get home.
In re: squeeze bag – absolutely. I might most likely replace one of my smartbottles with my 1L platy.
Phone battery: Still looking for good options. Most likely taking a pack with 3 charges. Any suggestions?
Maps and such: Need to look into this as well. I am still working on researching whether they are absolutely necessary for this loop. I am wearing a Suunto Core, so I might take a map just for the fun of running some triangulation and dead reckoning drills.
Toothbrush: Usually not for small trips. I carry a very tiny container of industrial-strength toothpaste, crazy high fluoride content. I floss (this is part of my repair kit) and “brush” with my finger. This was my dentist’s recommendation for the AT. Results: hiked for 5 months, developed no plaque, always healthy gums.
NOTE: I expect 10 days to be my max time out. I will be hiking with an expectation of 8 days. I am considering the option of changing the starting point to catch the one road crossing and resupply. I know Amy Lauterbach would shake her head slowly in dismay, but I consider the break in scenery worth the comfort of carrying half the amount of food.