hardly dream components, but I'm getting it together... that was a Deore, not a Sora crank (though the deore has a 44t on it-- which will do!). Also, I think i'm going to splurge and buy the Surly flip flop hub... it wouldn't seem right not to. But bullhorns, short-ass stem, and it looks like i'm going with SPD's.
speaking of which, am I insane to ride my first fixie in clipless pedals? it's been suggested...