Dang dude, that is sexy. I can imagine the thrill you got when that insert disk screen came up for the first time. Our wives will never understand.
I've got a Acill re-spin and a Chucky 3660 waiting for more parts and, like you, have been building my skills and tools for some time now in anticipation of this project. It seems like sourcing is the most challenging, and expensive, part of these things. Anyone who balks at the prices some of the guys selling new-build A4000 and 3640/60 boards has no clue how much it costs to put these together with all the parts. In these volumes we're sourcing, stuff gets quite expensive.
I assume you saw that idcomp.de is carrying both male and female DB23 PCB through-hole sockets, yeah?