I just ordered a Primus kettle. I also carry some of the stuff in your post Bee. I have a 4L MSR Dromedary Bag with a tube and bite nozzle, two 1L Nalgenes, an old army canteen cup and stove. One of the bottles carries kit stuff like my Miox and iodine solution and other stuff. I am of the mind that you can't have too much water (within reason) especially when it's hot.

My wife picked up my bag a few weeks ago on our five mile hike at a water break and said holy bleep this is heavy. And it was without the 4L bag, just two bottles of water. So I ended up shouldering my bag and carrying my two year old because she was done hiking. She got carried for most of the five miles which I thought was unsual because she made it all the way uphill (about a mile mile and a half) on a previous hike before she konked out and I had to carry her back down. My five year old made it the whole way on both hikes! Proud daddy moment.