P.S. Do not forget to have a check in date with friends or family and let them know the general area you will be traveling. IF, for some reason, you fail to check in within a designated margin of time, say 6–8 hours of your estimated check in, they will have that info. to pass on for a search party.
Also, carry a couple of flares in a waterproof bag, just in case you have an emergency.
Pack a snake bite kit too.
Not to sound paranoid but, I have been a river girl for most of my life and one must take seriously a trip like this.
I work in a river store amongst a lot of rafting companies and just yesterday I once again, had to deter some amateur rafters from not going out with a guide.
People under estimate the dangers on this river, we have already had a handful of drownings in recent weeks, including a Kayaker that went out alone into one of the class 4 rapids, capsized and got slammed into the rocks and drowned.
Have fun but be smart, a wimpy little human body is no match for rough water.