I took my Steamroller out for it's first real ride yesterday and I'm running 45x17 and find it's about as perfect a ratio there is for street riding.

Back on topic:
Tektro dual-pivot caliper for the rear
Shimano 17t freewheel
Origin8 aero road levers
Origin8 bar tape (white)
generic aluminum bottle cage (white)
Odyssey Slic Cable brake cables
Continental Contact II tires
Origin8 Proform UL pedals