Thanks for the information! and welcome to this forum
I don't do Arca. I'll try the 45144/45128 (whatever I find).
Tripod is one thing, but my main use is for my film scanning rig where the camera is mounted in stead of my enlarger head. I've mounted the body of the camera (907x + XV adapter + extension rings + 135mm) on it so far, but I expect better mechanical stability if I mount the bellows onto the enlarger.
Tripod us is cherry on the cake, though.