Hi Aaron,
First I would say you will be fine as far as safety is concerned.i don’t think you need to worry about that,
I can not recomend you campsites as I dont know enough about them, i only visited few.
October is generally already out of season time so you might find some of the campsites already closed, so be prepared to take room somewhere instead of camping.
Also it might rain, so it can be annoying so I would suggest you if you can to make that tirp earlier like September if you can.
Regarding food, it will be plenty of supply nearby in shops where localc shop so you will be ok for that one too.
Good luck