Hi Guys,
Maybe some of you will spend couple of minutes to comment.
I am planning to take on Mt Whitney trail with my friend at the end of September.
We know what weather can get bad this time of the year. We hope it will be nice, but we want to be prepared.

Most of the gear we have so far is low mid-price range.
Is there anything on the lower end that any of you could recommend (Tent, backpack, liner?)

We are getting:

-20-Degree sleeping bag
-One person tents --Which one you think is ok: Eureka Solitaire, Spitfire, or Backountry1 or Kelty Crestone, or Sierra Designs - Light Year 1
-Some kind of self-inflating liner
-2-3 liter water camel and filter (any cheap small filters that you could recommend?)

In addition, I have researched food, but in your opinion, experience, what would be ideal to take that would be lightweight, easy to prepare and best nutrition?

How about pants, are waterproof necessary or light pants and long Johns would be enough?
Of course on the top 3 layers (waterproof)

Any comments or suggestions appreciated.

Mike