Hi
I did this trail several years ago with the army.
We used tablets which made the water tase a little unpleasant but stopped parasites etc.

We were travelling fairly light so not much medical stuff iodine cream some general purpose antibiotics a few bandages. The rest was maily tent and eating irons etc

Boots are very important get a good pair that support your ankles and that are well worn in and plenty of thick socks.

Be aware it is hard work and still that there are plenty of dangers Wildlife etc.

The most important thing is to have a positive attitude in the face of adversity

Good luck
Chris Wilcox
fromm cold cold bournemouth uk