It's done!

BEFORE:



AFTER:



All new drivetrain, same old brakes but with travel agents, 105 5603 shifters and crank. Still fine-tuning things, the brakes aren't quite perfect, the front deraileur is a little sticky, and I can't figure out where my seat should be (might need a shorter stem). Overall very happy, noticeable faster on all terrain owing to the aerodynamic improvement and I really think the crank (gearing) and bottom bracket (much smoother).