I didn't expect to work on this until the weekend, but scored a bit of downtime this morning. Experimenting options.
Dura Ace RD, shifters, and 180mm cranks, tricolor FD, Campy Athena(?) levers and brakes at the moment.
Likely go with H+Son grey TB14s laced to 5600 hubs; either Conti GP4000s...or a less tall tire, given clearances.
Mock up with a set of track wheels I had handy, getting close to a complete build...but I'm not sure I'm happy.
One of my main concerns: do the Athena 'monoplanar'-style brakes look incongruous or out of place? I might swap for Centaur dual pivots or Shimano if these don't grow on me on as part of this build; they're beautiful brakes, but I'm undecided as to whether they suit the bike and general look thus far.
A couple of 'candid' build shots, pending better ones:
Incidentally: maybe not a 'crit' bike. BB actually seems on the low side (looks like it will be 26-26.5cm up with 23mm tires inflated).
I put the 180mm cranks on anyways. I'll need to pick up pedals anyways. Low profile track pedals, and we'll see how it goes.