By the way bro. I know very well what you pack with you,and as your friend I feel obligated to advise that when you go deep like that by yourself you really need to be packing the standard emergency gear and stuff. If you fall in the river, screw up your phone and break an ankle those granola bars are not going to do much for you and you are no Macgiver. Looking out for you man.
While it wouldn't be a bad idea, I don't think that bear spray is an absolute necessity up there. Over the years I have run into one bear on the SF, and it was way more afraid of me than I was of it. I only bring bear spray when I am in grizzly country. However, better safe then sorry. You never know when you might all of a sudden be standing in between a mom and her cubs.