Thanks!

Its two nights. First night we spend in a campsite, second night we spend in a cave which is a 12kms hike to reach. So its around 25 kms two ways.

Its not a major march but its a fair whack plus its mid-winter so it will get to around 2 degrees celsius at night.

We will have food for two days but it can be stretched to twice that in an emergency.

As far as gear sites go... this one here is pretty good! Otherwise I mostly do forums similar to this one for good gear info.