you have to work that out as a matter of chainline. i'd say see what bb you can get, shimanos are decent and not expensive...whatever crankset works, some tough wheels (i will be maybe the one person to advocate deep v's here), and sealed hubs...you could get deep v rims, miche sealed bearing track hubs, a shimano bb, a somewhat more random chainring/cog/crank assortment...not real sure on the headset, don't have a lot of expertise on that end of things.

but you can keep it in that price range and have a bike that will be a quality ride, but not one you have to baby. you said you want a beater for rainy portland, so build accordingly...get parts that work, bling can wait for another bike, so can other style points like a full campy gruppo or somesuch. for a rain bike, just go for parts that will work. sealed bearing and frame saver, too.

so when you coming up? this is a great town, in my opinion.