That's a nice route. There are some rural folks who drive kind of fast during the evening commute though, and that can get a little dicey... they're certainly used to seeing cyclists.
Here's a little bit more of a classic East Bay ride that includes the PROVERBIAL Pig Farm Hill, make sure you do it in this direction even though it starts in Martinez.
https://ridewithgps.com/routes/69590
And for the views, you should check out Carquinez Scenic Straight.
Welcome.
It is my duty to suggest you also ride Mount Diablo... let me know if you need directions.