I'm puzzled that some of the photos show a Tange Ultimate Ultralight sticker on the seat tube, but others show a Tange Prestige sticker in the same place. Does that mean that the tubeset is actually Tange Ultimate, but you had to change the sticker?
I saw that you said you ought to use a rigid fork, but that looks like a 41cm a-c Project 2 you have on it and it still has reasonable bottom bracket drop with that. So I would guess that the frame is 'suspension-adjusted', in case you ever hanker after some more compliance up front. I do like the black with the frame colour, but a Pace RC35 is also black.