an HLV is not really a benchtop lathe, it is 1800 lbs but meets all other criteria
that was my first thought, but the gentleman here wants it to weigh in below 350 pounds, which is quite odd of a requirement, but, anyway, a refurbished HLV with improvised drive mechanism (vfd to get rid of the reeves drive) without the bench would still be about twice as that
I haven't handled HLV, but having stripped down and put together my HLV-H, the bed alone minus the dovetail was probably close to 350, but since the HLV is narrower, it might be a little lighter there, but the spindle housing and saddle, not to mention the tailstock, would still add up to another 300-350, and then you'll need to hang the spindle motor below the bench somehow... it would be quite a project, and OP seems to want to avoid projects and go straight to making parts
that "German" Wabeco looks oddly similar to the generic Chinese/Taiwanese ones in the 1-2k$ range, but one significant improvement over the cheap ones seems to be that the bed casting goes all the way to the feed gears, the cheap ones have a "cutout" under the spindle housing that turns the box shape into a "T", supposedly to fit the spindle motor closer and make the thing more compact, but that cutout makes the bed significantly less rigid, good to see that Wabeco don't seem to have done that (according the pic I could find of it), but 10k for that... it would have to be someone elses money if I had to pay that amount for this sort of machine...
p.s. that picture comes from this Russian thread -
Wabeco D6000 - Страница 13 - Импортные токарные станки - Металлический форум , take a very close look at the pictures in the last page - shims under headstock for alignment... and something else the new "happy" owner had to do to make it work for him, if you have trouble translating it yourself and want to know details, ask, I'll translate it