Man, I love me a good steam, but for my tastes, it needs that woody/earthy hop character.
I have gone in both directions on a cal common, at one end, Jamil's (lots of malt, including caramel/toast) and at one end, a beer with a grist like yours. I like them both. A lot. But for me it needs NB's!
IIRC though, in Designing Great Beers, Ray Daniels mentions that cascades can be used in the style (?) Intuitively, it seems like it would be more of an APA, if you like that flavor profile, brew on! You will hopefully also get that ever-so-slight-and-awesome sulfur/mineral kick from SF Lager.