Digital BW, The Print

Olaf - While I don't have experience with labs in New York City making
LightJet prints, the lab that I use in Massachusetts has done them for me.
I think that there are a number of things you can do to try to get decent
output from this method of printing.  Once you have chosen a lab, you should
be able to get profiles from them that will allow you to see on your
computer (via soft-proofing, etc.) what their output will look like with the
different papers they use with their machine.  It will also be important to
ask if they generally do anything to files that you give them before
printing.  Do they sharpen them?  Do they view them in a particular color
space on a monitor with a particular white point/gamma/calibration?

You could then experiment, having them make a small print or two in order to
see what the differences are between your image on the monitor and their
print.  I have found that the LightJet prints tend to have a shorter range
and steeper contrast than inkjet prints. They seem to lose information above
a white value of 250 and below a black value of 5, so the work that you do
on a particular file to be made into a LightJet print will need to be
different from one that you might edit for inkjet printing.