IMPORTANT HIKING QUESTION?

Hi, I am planning on an overnight trip to mount chocorua in New Hampshire. I was wondering if anyone can help me out and see if I am missing anything in this list! 10 POINTS TO BEST ANSWER! Also, I cannot afford a water filter but are the water purfication tablets still safe to use? my list is: sleeping bag with sleeping pad, extra cloths, exta food, water water and more water, MRE's with propane stove and a lot of extra food, flashlights with extra batteries, extra cloths, and thats all i have. If anyone can add to that i will greatly appreciate it!!