It doesn't sound as if you'll have sensitivity problems Dave! If
you do, you can measure contrast either with the lens wide open
and/or at a smaller print size. Then go to the desired
magnification and aperture and with the meter set to the
contrast grade you established previously, meter a shadow.
Increase the exposure until the LED moves to the shadow end of
the scale, and that's your exposure.  Thanks for your order,
I'll get that out as soon as I can.