Hi West,
So far as can tell, you would best serve yourself by driving a D unit. I live in Portland. Most expediting is done east of the Mississippi but a lot of freight also comes west. You just have to be willing to be out several weeks at a time. I personally think the expediting market will increase greatly here on the "left" coast. It really is just a matter of time. Anyway, hope this helps!
Drive safe,
Sean