Thanks everyone for the nice comments.
I have about 500 pics I took, here are a few of them:
As for water - it is very scarce on the North and East sides. Your only sources of water from Tahoe City are: Watson Lake, Watson Creek (1.5 miles from Watson Lake, then 0.3 miles down Forest Road), Gray Lake, Snow/Frog Lake, Ophir Creek, Marlette Peak Campground (if TRTA has stocked the water cache), Marlette Lake, North Canyon Campground (creek 100' west of campground), Spooner Lake (15 minute walk from TH). That is it. So you will need to plan accordingly. We did find water at a seasonal stream about 2.5 miles south of the Tahoe Meadows TH - however it will be dry by September. From Kingsbury South to Star Lake it is dry. About 1.5 miles from Star Lake there is a tributary of Cold Creek that was running nicely and excellent camping there - it was about 2' wide, it might still be trickling in another month. From Armstrong Pass to Big Meadows there were several seasonal streams just down from the pass that were flowing nicely and "may" still be running in another month. After that you are dry until you reach the streams near Big Meadows. From Big Meadows to Echo Lakes you should have plenty of water as you have several lakes and streams. Desolation Wilderness to Barker Pass is pretty good. You have Richardson Lake and Miller Creek. From Miller Creek to Ward Creek is dry - some water in Blackwood Canyon.
Hopefully that helps you in your water planning - you will probably need to do big miles on the North and East side to camp around water sources. We dry camped at South Peak Camp and near the PCT/TRT junction on the east side.
On the north and east side I carried 3L of water so that I had plenty and then if I knew I would be dry camping - loaded up when possible.
As far as temperatures - we started at 7a each day to hike in the cool of the day. Night time temps were in the upper 40's, however in September it will be cooler so you may need warmer gear. It was funny - in the sun very hot in the forest area and then chilly on the ridges in the shade. So you have to layer yourself.
There was evidence of bears all over the place, however we used Ursacks and practiced safe handling and had no issues - nor did we see any, just lots of prints on the trail. Both Marlette Peak Campground and North Canyon Campground have bear lockers. I don't think you need a bear cannister. I don't hang my food as I prefer to use an Ursack and tie it up (much easier than throwing a rope).
You can also ready my Trail Journals entry at trailjournals.com/OregonBeerMan for more information.
Enjoy the hike! It is a very nice one.