Gina,
DH is full of ideas for you but do you want to spend the week out driving while he's in class?
You can go on up Hwy 1 from Jenner to Fort Ross which is an old Russian Fort and then through The Sea Ranch (beautiful oceanfront development) and to Gualala (cute town) but it will take you all day and more! It would be a LONG day of driving without much time for stopping anywhere.
Highway 1 is best described as 20 mph switchbacks!