Foothillgirl, I think we're going up and over Old La Honda and joining 84 where it intersects OLH on the west side, so from there to San Gregorio 84 is fairly straight with reasonably good shoulders. For the most part.
I love the San Gregorio store, it's such a hoot! 
I also like Pescadero, incredible croissants at the bakery/general store out there. But our route won't be taking us out that way (unless I can twist some arms ...)
2009 Lynskey R230 Houseblend - Brooks Team Pro
2007 Rivendell Bleriot - Rivet Pearl