Well, I don't know that area of SF that well, but I can comment on part of your insructions...

If you're comming all the way from San Jose, you might want to cross over to 280 as early as you can, instead of going all the way up to 380. 380 looks like the best spot to cross over when you look at a map, but 280 is a typically a much, much faster freeway than 101, so it's usually worth it to cross over earlier if you can. Depends on where in San Ho you are.

(Edited do to brain fart)