Hey
Definitely would have more than one set of Glove's, they can be used for so much - carrying water, a recuss aid: put a slit in it and it acts as a barrier, put a small hole in the bottom of one of the fingers for irrigation of open cuts, etc.
Betadine . . . basically 10% Provodone Iodine (and iodine is cheaper just get it in a dropper bottle if possible) use as an antiseptic or in river water to sterilise (3drops per litre) - for drinking or irrigation of open wounds. NB. SOME people are very sensitive to iodine especially people with fish allergies.
STERI strips and lots of them . . . . . Get the big ones you can always cut them down to size.
Also extra gauze for cleaning of wounds . . .
Thermometer . . . theres small plastic reusable one available, thin, cheap, etc.
Finally extras would be as jenny said fire - for warmth, and glucose tablets like Lucozade tablets - for energy hits, diabetics, etc. Also if using paracetamol, ibuprofen etc make sure of dosage.
See you soon
Sean