We went had itinerary #4, with a night on Mt. Phillips, approaching from the south (Crooked Creek) and ending up at Cypher's Mine.
That is a long, dry two days. There is no water until very close to Cypher's Mine. We cooked dinner for lunch at Crooked Creek and ate lunch for dinner on Mt. Phillips. We carried 6 liters of water each starting from Crooked Creek and we were dry when we got to the next water source. Our sister (same itinerary, same start date) crew took 3 liters each and lost a crew member with dehydration the next day. Even with an IV at Cimmaroncito, he had to be evac'ed to base camp.
You'll need a one liter bottle to mix Gatorade. That is a smellable, so it is a dedicated bottle. I used a plastic Gatorade bottle. Duh.
You'll need to take three liters of water to your conservation project. This is a rule. Three hours, three liters.
One of our crew had a wide-mouth Nalgene canteen that held three liters. This was perfect. It was the extra for the dry camp, the water for the cons project, and great for fetching water all the way across the meadow at Apache Springs. I highly recommend each crew member having one of these. $11, 2.25 oz. http://www.rei.com/product/626195/nalgene-wide-mouth-cantene-96-fl-oz
I had a pair of 2 liter Platypus folding bottles for extra water. Nice, but not as convenient to carry around as the above Nalgene canteen.
I also had a 2+ liter bladder (Camelback Omega, heavy but reliable). I also carried a one liter Calistoga bottle. That serves as my night-time water bottle and a handy way to treat an extra liter on the trail.
The careful reader will count 8 liters of water carrying capacity. I loaned out one of the Platys to a crewmember who didn't have as much capacity.
If everyone has a 3 liter Nalgene canteen, a Gatorade bottle, and either a water bladder or a 2 liter Platy, they are set for the trek, including cons and dry camps.
2010 Trek 624-X