Obviously, the bear spray is a good choice for primary defense.
About the sidearms, I'm all for carrying, but I think 2 guns (one for bears and one for everything else) is a bit much. I would probably only carry the 629, and bring some decent defensive .44 special rounds for when bears aren't an issue.
I know you are only going on day-hikes, but the added weight yields a miniscule benefit, IMO.
No matter what you decide, I hope you have a great trip. I'm about to head up the NorCal and Oregon coast in a couple weeks for some camping and I can't wait.